find方法要求您知道主键和实际类的类型。

The find method requires you to know the primary key as well as the actual class type.

youdao

有时我们想限制可能出现的泛型类的类型实例化。

Sometimes we want to restrict the potential type instantiations of a generic class.

youdao

因此，不能复制在编译时根本不知道是什么类的类型引用。

OK, so you can't copy a reference to a type whose class is totally unknown at compile time.

youdao

You'll notice that a lot of different kinds medications do you have chlorine in them, you'll see that c l group.

你会注意到很多不同类型的药物都含有氯,你会看到这类氯。

麻省理工公开课 - 化学原理课程节选

Whenever I think about how to build an interesting program, and I hope whenever you think about it, the first thing I think about is, what are the classes I might want to have, what are the types?

无论我何时,去想怎样建立一个有趣的程序，你们每次做这种思考的时候，你们想得第一件事，就是我应该要有什么类呢，它们是什么类型的呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

Now, neurotransmitters become interesting because a lot of psychopharmacology, both of the medical sort and the recreational sort, consists of fiddling with neurotransmitters and so you could see this through some examples.

神经递质非常的有意思,因为很多类型的精神药理学,不论是医疗类的还是消遣类的,都在研究对神经递质的控制,所以你们可以通过些例子来了解这一点

耶鲁公开课 - 心理学导论课程节选