A: Mary is really a diligent girl.

玛丽实在是一个勤奋的女孩。

B: What do you mean?

为什么这么说?

A: She learns to speak Latin by osmosis within three months.

她废寝忘食地在三个月内学会了拉丁语。

B: She is really something.

她真了不起。