内网anaconda如何使用代理，避免网络连接失败？

问题征兆

在内网环境使用anaconda创建新环境：

conda create --name py39 python=3.9

由于网络原因，遇到如下报错：

Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0xffffa9760650>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /anaconda/pkgs/free/linux-aarch64/repodata.json.zst

CondaHTTPError: HTTP 000 CONNECTION FAILED for url <http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-aarch64/repodata.json>
Elapsed: -

An HTTP error occurred when trying to retrieve this URL.
HTTP errors are often intermittent, and a simpl