The American contingent will stay overnight in London.

美国代表团将在伦敦留宿。

You can stay overnight if you want to.

如果你愿意的话可以住一晚。

We need an accommodation to stay overnight.

我们需要一个过夜的住处。

They answered quickly, "You can stay overnight here."

他们很快回答道：“那你可以留下来过夜。”

Do you want me to stay overnight with you tonight?

你要我今晚在这里陪你吗？