REMARKS BY THE PRESIDENT IN A NATIONAL ADDRESS TO AMERICA'S SCHOOLCHILDREN

美国总统在学校发表演讲,鼓励学生们珍惜教育机会,强调无论面临何种困难都应坚持学业的重要性,并以几个克服逆境取得成功的青年为例,激励学生们设定目标并为之努力。


------------------------------------------------------

Wakefield High School, Arlington, Virginia, 12:06 P.M. EDT

THE PRESIDENT: Hello, everybody! Thank you. Thank you. Thank you, everybody. All right, everybody go ahead and have a seat. How is everybody doing today? (Applause.) How about Tim Spicer? (Applause.) I am here with students at Wakefield High School in Arlington, Virginia. And we've got students tuning in from all across America, from kindergarten through 12th grade. And I am just so glad that all could join us today. And I want to thank Wakefield for being such an outstanding host. Give yourselves a big round of applause. (Applause.)

I know that for many of you, today is the first day of school. And for those of you in kindergarten, or starting middle or high school, it's your first day in a new school, so it's understandable if you're a little nervous. I imagine there are some seniors out there who are feeling pretty good right now -- (applause) -- with just one more year to go. And no matter what grade you're in, some of you are probably wishing it were still summer and you could've stayed in bed just a little bit longer this morning.

I know that feeling. When I was young, my family lived overseas. I lived in Indonesia for a few years. And my mother, she didn't have the money to send me where all the American kids went to school, but she thought it was important for me to keep up with an American education. So she decided to teach me extra lessons herself, Monday through Friday. But because she had to go to work, the only time she could do it was at 4:30 in the morning.

Now, as you might imagine, I wasn't too happy about getting up that early. And a lot of times, I'd fall asleep right there at the kitchen table. But whenever I'd complain, my mother would just give me one of those looks and she'd say, "This is no picnic for me either , buster(小家伙). " (Laughter.)

So I know that some of you are still adjusting to being back at school. But I'm here today because I have something important to discuss with you. I'm here because I want to talk with you about your education and what's expected of all of you in this new school year.

Now, I've given a lot of speeches about education. And I've talked about responsibility a lot.

I've talked about teachers' responsibility for inspiring students and pushing you to learn.

I've talked about your parents' responsibility for making sure you stay on track, and you get your homework done, and don't spend every waking hour in front of the TV or with the Xbox.

I've talked a lot about your government's responsibility for setting high standards, and supporting teachers and principals, and turning around扭转 ) schools that aren't working, where students aren't getting the opportunities that they deserve.

But at the end of the day, we can have the most dedicated teachers, the most supportive parents, the best schools in the world -- and none of it will make a difference, none of it will matter unless all of you fulfill your responsibilities, unless you show up to those schools, unless you pay attention to those teachers, unless you listen to your parents and grandparents and other adults and put in the hard work it takes to succeed. That's what I want to focus on today: the responsibility each of you has for your education.

I want to start with the responsibility you have to yourself. Every single one of you has something that you're good at. Every single one of you has something to offer. And you have a responsibility to yourself to discover what that is. That's the opportunity an education can provide.

Maybe you could be a great writer -- maybe even good enough to write a book or articles in a newspaper -- but you might not know it until you write that English paper -- that English class paper that's assigned to you. Maybe you could be an innovator or an inventor -- maybe even good enough to come up with the next iPhone or the new medicine or vaccine -- but you might not know it until you do your project for your science class. Maybe you could be a mayor or a senator or a Supreme Court justice -- but you might not know that until you join student government or the debate team.

And no matter what you want to do with your life, I guarantee that you'll need an education to do it. You want to be a doctor, or a teacher, or a police officer? You want to be a nurse or an architect, a lawyer or a member of our military? You're going to need a good education for every single one of those careers. You cannot drop out of school and just drop into a good job. You've got to train for it and work for it and learn for it.

And this isn't just important for your own life and your own future. What you make of your education will decide nothing less than(正是) the future of this country. The future of America depends on you. What you're learning in school today will determine whether we as a nation can meet our greatest challenges in the future.

You'll need the knowledge and problem-solving skills you learn in science and math to cure diseases like cancer and AIDS, and to develop new energy technologies and protect our environment. You'll need the insights and critical-thinking skills you gain in history and social studies to fight poverty and homelessness, crime and discrimination, and make our nation more fair and more free. You'll need the creativity and ingenuity[in·ge·nu·i·ty || ‚ɪndʒɪ'nuːətɪ /-'nju- ] n.  智巧, 精巧的设计, 创造力)you develop in all your classes to build new companies that will create new jobs and boost our economy.

We need every single one of you to develop your talents and your skills and your intellect so you can help us old folks solve our most difficult problems. If you don't do that -- if you quit on school -- you're not just quitting on yourself, you're quitting on your country.

Now, I know it's not always easy to do well in school. I know a lot of you have challenges in your lives right now that can make it hard to focus on your schoolwork.

I get it. I know what it's like. My father left my family when I was two years old, and I was raised by a single mom who had to work and who struggled at times to pay the bills and wasn't always able to give us the things that other kids had. There were times when I missed having a father in my life. There were times when I was lonely and I felt like I didn't fit in.

So I wasn't always as focused as I should have been on school, and I did some things I'm not proud of, and I got in more trouble than I should have. And my life could have easily taken a turn for the worse.

But I was -- I was lucky. I got a lot of second chances, and I had the opportunity to go to college and law school and follow my dreams. My wife, our First Lady Michelle Obama, she has a similar story. Neither of her parents had gone to college, and they didn't have a lot of money. But they worked hard, and she worked hard, so that she could go to the best schools in this country.

Some of you might not have those advantages. Maybe you don't have adults in your life who give you the support that you need. Maybe someone in your family has lost their job and there's not enough money to go around. Maybe you live in a neighborhood where you don't feel safe, or have friends who are pressuring you to do things you know aren't right.

But at the end of the day, the circumstances of your life -- what you look like, where you come from, how much money you have, what you've got going on at home -- none of that is an excuse for neglecting your homework or having a bad attitude in school. That's no excuse for talking back to your teacher, or cutting class, or dropping out of school. There is no excuse for not trying.

Where you are right now doesn't have to determine where you'll end up
. No one's written your destiny for you, because here in America, you write your own destiny. You make your own future.

That's what young people like you are doing every day, all across America.

Young people like Jazmin Perez, from Roma, Texas. Jazmin didn't speak English when she first started school. Neither of her parents had gone to college. But she worked hard, earned good grades, and got a scholarship to Brown University -- is now in graduate school, studying public health, on her way to becoming Dr. Jazmin Perez.

I'm thinking about Andoni Schultz, from Los Altos, California, who's fought brain cancer since he was three. He's had to endure all sorts of treatments and surgeries, one of which affected his memory, so it took him much longer -- hundreds of extra hours -- to do his schoolwork. But he never fell behind. He's headed to college this fall.

And then there's Shantell Steve, from my hometown of Chicago, Illinois. Even when bouncing from foster home to foster home in the toughest neighborhoods in the city, she managed to get a job at a local health care center, start a program to keep young people out of gangs, and she's on track to (有望)graduate high school with honors and go on to college.

And Jazmin, Andoni, and Shantell aren't any different from any of you. They face challenges in their lives just like you do. In some cases they've got it a lot worse off( 情况更坏) than many of you. But they refused to give up. They chose to take responsibility for their lives, for their education, and set goals for themselves. And I expect all of you to do the same.

That's why today I'm calling on each of you to set your own goals for your education -- and do everything you can to meet them. Your goal can be something as simple as doing all your homework, paying attention in class, or spending some time each day reading a book. Maybe you'll decide to get involved in an extracurricular activity, or volunteer in your community. Maybe you'll decide to stand up for kids who are being teased or bullied because of who they are or how they look, because you believe, like I do, that all young people deserve a safe environment to study and learn. Maybe you'll decide to take better care of yourself so you can be more ready to learn. And along those lines, by the way, I hope all of you are washing your hands a lot, and that you stay home from school when you don't feel well, so we can keep people from getting the flu this fall and winter.

But whatever you resolve to do , I want you to commit to it. I want you to really work at it .

I know that sometimes you get that sense from TV that you can be rich and successful without any hard work -- that your ticket to success is through rapping or basketball or being a reality TV star. Chances are you're not going to be any of those things.

The truth is, being successful is hard. You won't love every subject that you study. You won't click with every teacher that you have. Not every homework assignment will seem completely relevant to your life right at this minute. And you won't necessarily succeed at everything the first time you try.

That's okay. Some of the most successful people in the world are the ones who've had the most failures. J.K. Rowling's -- who wrote Harry Potter -- her first Harry Potter book was rejected 12 times before it was finally published. Michael Jordan was cut from his high school basketball team. He lost hundreds of games and missed thousands of shots during his career. But he once said, "I have failed over and over and over again in my life. And that's why I succeed. "

These people succeeded because they understood that you can't let your failures define you -- you have to let your failures teach you. You have to let them show you what to do differently the next time. So if you get into trouble, that doesn't mean you're a troublemaker, it means you need to try harder to act right. If you get a bad grade, that doesn't mean you're stupid, it just means you need to spend more time studying.

No one's born being good at all things. You become good at things through hard work. You're not a varsity athlete the first time you play a new sport. You don't hit every note the first time you sing a song. You've got to practice. The same principle applies to your schoolwork. You might have to do a math problem a few times before you get it right. You might have to read something a few times before you understand it. You definitely have to do a few drafts of a paper before it's good enough to hand in.

Don't be afraid to ask questions. Don't be afraid to ask for help when you need it. I do that every day. Asking for help isn't a sign of weakness, it's a sign of strength because it shows you have the courage to admit when you don't know something, and that then allows you to learn something new. So find an adult that you trust -- a parent, a grandparent or teacher, a coach or a counselor -- and ask them to help you stay on track to meet your goals.

And even when you're struggling, even when you're discouraged, and you feel like other people have given up on you, don't ever give up on yourself, because when you give up on yourself, you give up on your country.

The story of America isn't about people who quit when things got tough. It's about people who kept going, who tried harder, who loved their country too much to do anything less than their best.

It's the story of students who sat where you sit 250 years ago, and went on to wage a revolution and they founded this nation. Young people. Students who sat where you sit 75 years ago who overcame a Depression and won a world war; who fought for civil rights and put a man on the moon. Students who sat where you sit 20 years ago who founded Google and Twitter and Facebook and changed the way we communicate with each other.

So today, I want to ask all of you, what's your contribution going to be? What problems are you going to solve? What discoveries will you make? What will a President who comes here in 20 or 50 or 100 years say about what all of you did for this country?
(绝对是演讲的好套路!)

Now, your families, your teachers, and I are doing everything we can to make sure you have the education you need to answer these questions. I'm working hard to fix up your classrooms and get you the books and the equipment and the computers you need to learn. But you've got to do your part, too . So I expect all of you to get serious this year. I expect you to put your best effort into everything you do. I expect great things from each of you. So don't let us down. Don't let your family down or your country down. Most of all, don't let yourself down. Make us all proud.

Thank you very much, everybody. God bless you. God bless America. Thank you. (Applause.)

END
12:22 P.M. EDT

<think>嗯,用户提到的这个Liquibase的警告信息是关于JdbcExecutor的,具体是说NATIONAL/NCHAR/NVARCHAR这些数据类型默认使用UTF8MB3字符集,未来会被UTF8MB4替代。用户可能需要解决这个警告,或者了解背后的原因。首先,我需要确认这个警告的来源,是MySQL的驱动还是Liquibase本身? 我记得MySQL从某个版本开始,确实将默认字符集从UTF8MB3升级到了UTF8MB4,特别是8.0版本之后。UTF8MB3不支持四字节的字符,比如一些emoji,而UTF8MB4支持。所以当使用NATIONAL或NCHAR这些类型时,可能默认还是关联到旧的字符集,导致警告。 接下来,用户可能在使用Liquibase生成或执行迁移脚本时遇到了这个警告。需要解释为什么会出现这个提示,以及如何解决。解决的方法应该是显式指定字符集为UTF8MB4,例如在定义字段时使用CHAR(x) CHARACTER SET UTF8MB4,而不是依赖默认设置。 另外,用户可能需要知道如何修改现有的Liquibase变更集,或者调整数据库配置以避免未来升级的问题。可能还需要检查数据库的全局字符集设置,确保整个数据库默认使用UTF8MB4,这样即使不显式指定,也能避免警告。 还有,用户可能不太清楚UTF8MB3和UTF8MB4的区别,是否需要简要说明一下?比如,UTF8MB3是MySQL早期实现的,只支持最多三个字节的字符,而UTF8MB4是完整的四字节支持。因此,升级到UTF8MB4能更好地支持更多的Unicode字符,包括表情符号。 另外,考虑到用户使用的是Liquibase,可能需要指导他们如何修改changeLog文件中的列定义,将原有的NCHAR等类型替换为带有CHARACTER SET UTF8MB4的声明。例如,原来的<column name="name" type="NVARCHAR(255)"/>可能需要改成<column name="name" type="VARCHAR(255)" defaultValueComputed="CHARACTER SET utf8mb4"/>或者类似的语法,但需要确认Liquibase是否支持这样的定义,或者是否需要直接使用SQL语句。 此外,用户可能需要检查当前MySQL的版本,以及默认的字符集配置。可以通过执行SHOW VARIABLES LIKE 'character_set_server';来查看,如果还是utf8mb3,可能需要调整my.cnf或my.ini文件,设置默认字符集为utf8mb4,并重启数据库。 还有可能用户的应用已经使用了utf8mb4,但由于Liquibase生成的语句仍然使用了NCHAR等类型,导致警告出现。这时候需要调整Liquibase的变更脚本,避免使用这些可能引发警告的类型,转而显式指定字符集。 总结来说,用户需要两个层面的解决方案:一是修改数据库配置,确保默认字符集为utf8mb4;二是调整Liquibase的变更集,显式指定字符集,避免使用可能触发警告的数据类型。同时,需要解释背后的原因,让用户理解为何要进行这些更改,以及不更改可能带来的影响,比如未来MySQL版本升级后可能出现的问题。</think>您遇到的警告信息与MySQL数据库字符集升级相关,以下是逐步解释和解决方案: --- ### **1. 问题背景** - **警告来源**:当使用Liquibase的`JdbcExecutor`执行SQL时,MySQL驱动检测到`NATIONAL`/`NCHAR`/`NVARCHAR`等数据类型默认关联`UTF8MB3`字符集。 - **MySQL升级计划**:未来版本将弃用`UTF8MB3`,全面转向`UTF8MB4`(支持更完整的Unicode字符,如Emoji)。 --- ### **2. 核心概念** - **UTF8MB3**:MySQL旧版字符集,仅支持3字节编码(基本多语言平面字符)。 - **UTF8MB4**:扩展字符集,支持4字节编码(如Emoji、特殊符号等)。 - **`NATIONAL`关键字**:在SQL标准中表示“使用数据库默认字符集”,但MySQL中`NATIONAL`默认绑定`UTF8MB3`。 --- ### **3. 警告原因** - 使用`NCHAR`/`NVARCHAR`时,MySQL隐式选择`UTF8MB3`,而未来版本会强制改用`UTF8MB4`,导致潜在兼容性问题。 --- ### **4. 解决方案** #### **方案一:显式指定字符集(推荐)** 在Liquibase变更集(`changelog.xml`)中,直接声明字段使用`CHARACTER SET UTF8MB4`: ```xml <changeSet id="1" author="example"> <createTable tableName="demo"> <!-- 替换原有NVARCHAR定义 --> <column name="name" type="VARCHAR(255)" remarks="CHARACTER SET utf8mb4"/> </createTable> </changeSet> ``` #### **方案二:修改数据库默认配置** 调整MySQL服务端配置,全局启用`UTF8MB4`: 1. 修改`my.cnf`(或`my.ini`): ```ini [mysqld] character_set_server=utf8mb4 collation_server=utf8mb4_unicode_ci ``` 2. 重启MySQL服务。 #### **方案三:避免依赖隐式字符集** - 停止使用`NATIONAL`/`NCHAR`/`NVARCHA
评论
添加红包

请填写红包祝福语或标题

红包个数最小为10个

红包金额最低5元

当前余额3.43前往充值 >
需支付:10.00
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值