Don't touch anything unless your teacher tells you to.

除非老师允许，否则你不要动任何东西。

Of course I will. What about you? Aren't you going to Xi'an soon?

我当然会的。你打算上哪度假呢？你不是很快就要去西安了吗？

Of course. I love sports.

当然。我喜爱体育活动。

What's it about?

它是讲什么的？

I didn't have any supper, except a piece of bread, because I didn't feel very well.

晚餐我只吃了一片面包，别的什么也没吃，因为我觉得不舒服。

In the beginning they used to carve Chinese characters on stones to record important dates in history.

开始时，他们常把汉字刻在石头上，记载历史上重要的日期。