You must sign guests out when they leave the club.

客人离开俱乐部时，你必须为他们签退。

《牛津词典》

They leave when the clock tells them they're done.

他们到了时间就离开了。

youdao

All students should be numerate and literate when they leave school.

所有的学生毕业时都应具备计算和读写的能力。

《牛津词典》

There they leave their eggs on milkweed plants, with the next generation of monarchs appearing a short time later.

VOA: special.2010.04.27

And this fluid eventually starts to leak out and those lesions would heal, but they leave scars in most cases.

这些液体最终会流出来,伤痕也会痊愈,但大部分情况下会留下疤痕

耶鲁公开课 - 生物医学工程探索课程节选

In some cases, we have to ask people to leave or they leave on their own.

在某些情况下，我需要让有些人,离开，或者等他们主动离开。

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U.S. national debt, they leave in place an American liability that prevents trade adjustment.

FORBES: Congress Messes With China While Sen. DeMint Eyes The Dollar

Maybe the two activists are waiting for the stock to recover before they leave the board.

FORBES: J.C.Penney: Dear Activists, Thank You For This Mess

When infected bugs bite a person, they leave behind T. cruzi parasites on the skin.

CNN: Chagas disease