They are prepared to hand back a hundred prisoners of war a day as a sign of good will.

作为一种友好的表示，他们准备一天遣返100名战犯。

Extend your hand back and embrace a piece of history.

伸出您的手来拥抱一段历史吧！

When will Professor Smith hand back our exam papers?

史密斯教授什么时候会把考卷发还我们？

"I'm sorry," he muttered, pulling his hand back immediately.

“对不起。”他低声说道，立刻收回了手。

Don't forget to hand back your room key before you leave the hotel.

在离开旅馆之前，请不要忘记交还房间的钥匙。