The notion of a Dirac measure makes sense on any set whatsoever.

狄拉克测度的概念在任何集合上都有意义。

Later Dirac learnt the truth.

很久以后狄拉克才知道了真相。

Dirac was an odd and difficult man.

狄拉克性情古怪、难于相处。

Dirac blamed his father for the death.

狄拉克认为他父亲应当为此负责。

Dirac said nothing.

狄拉克什么也没说。