一个简单的用一个线程判断另一个线程是否结束的小实验，里面有用到代理，是个小例子，方便刚学的人看懂，之前找过，这里大多要么太复杂，要么太抽象，希望对你有用！-A simple thread with a thread to determine whether or not the end of another small experiment, which useful to agents, is a small example of the convenience of people just