关于水的笑话

An instructor in chemical warfare asked soldiers in his class: Anyone knows the formula for water?

Sure. That's easy, said one man.

What is it?

H, I, J, K, L, M, N, O.

What, what? reasked the instructor.

H to O, explained the chemistry expert.中文翻译：
生化战争课的老师在课堂上问士兵们：谁知道水的分子式？

当然，太简单了。一个士兵回答道。

是什么？

H, I, J, K, L, M, N, O.

什么，什么？老师又问道。

H to O，化学专家解释道。