yield return用法

疑问

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    IEnumerator Start() {
        print("Starting " + Time.time);
        yield return StartCoroutine(WaitAndPrint(2.0F));
        print("Done " + Time.time);
    }
    IEnumerator WaitAndPrint(float waitTime) {
        yield return new WaitForSeconds(waitTime);
        //这儿return后面的语句还能执行到？？？
        print("WaitAndPrint " + Time.time);
    }
}