The letter informed Mickey that the check, which he had tried to cash, had been canceled.

这封信告诉米奇，他想兑现的支票已经被注销了。

The recipient can ask the Future to block until a result is ready, poll to see whether it's complete, cancel the computation, or check whether another thread has canceled it.

接收者可以要求Future阻止线程，直至一个结果就绪，检测查看它是否完成并取消计算指令，或检查是否有其他进程取消了它。

Today, I canceled my dental check-up because I'm getting busy at work.

今天由于工作挺忙，我没按预约的去找我的牙医，而是用牙线自己做清洁。

That check was canceled and a new one was issued.

那张支票已经被注销了，新的一张已经发出了。