He left off playing the piano to answer the door.

他停止弹钢琴，应门去了。

He looked up and the last one had left off work.

他向上看，最后一个也已经停止工作。

You've left off a zero.

你漏掉了一个零。

Let's pick up where we left off yesterday.

咱们从昨天停下的地方继续吧。

She took up the story where Tim had left off.

她接着讲蒂姆未讲完的故事。