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。

It'll make the cabbage plants grow big and strong.

它能使白菜秧长得又大又壮。

I prefer horse riding to shooting.

骑马和射击相比，我更喜欢骑马。

I mean powder that is made from fish, blood and bone.

我是指用鱼、血和骨头制成的粉末。

To London.

到伦敦。

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。