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。

When the plants are in the ground I'll put some powder on the soil.

白菜在地里生长时，我得在土壤里施些肥粉。

It would be a waste of money to buy the IBM PC586.

买IBM586就浪费钱了。

Yes, that's a good idea. But I have another difficulty. My written English isn't very good either.

是的，这主意不错。但我还有另外一个难题。我的书面英语也不好。

What will the money be used for?

这钱打算怎么用？

Perhaps in those days I was. Pierre and I did have a very good time at the ball. But that was the last moment of happiness in our lives. That night everything changed.

那时候，我也许是个漂亮姑娘。我和比尔在舞会上的确玩得很痛快。不过，那是我们一生中最后的幸福时刻。那天晚上一切都变了。