Yes. Wash your hands with soap at the end of your experiment.

可以。在实验结束时要用肥皂洗手。

A noise?

一阵响声？

Shooting. Do you like shooting?

射击。你喜欢射击吗？

What's on at the cinema this week?

这周电影院放映什么电影？

How many of you are making the trip?

你们有多少人去旅行？

Mathilde! I didn't know. I'm sorry. But what happened?

玛蒂尔德！我还不知道这些情况哩。我真难过。但是，这是怎么回事呢？