因为类装入器往往比较小，所以这个开销不会大。

Because class loaders tend to be small, this overhead should not be high.

youdao

因为类名称是常量，所以您只能有一个给定名称的类。

Because class names are constants, you can have only one class of a given name.

youdao

还可以添加方法和数据到已有的类中，因为类是开放式的。

You can also add methods and data to existing Ruby classes because classes are open.

youdao

Of the savings institutions, there were only 1,500; that's probably going down further because a lot of these old savings banks are being converted into commercial banks.

至于储蓄机构,只有1500个,现在可能就更少了,因为很多这类古老的储蓄银行,都逐渐被改造成了商业银行

耶鲁公开课 - 金融市场课程节选

The worry is that those of us who are harder graders than average, if the information were published, would feel guilty and sort of ease up on our grading.

他们担心的是，我们这些更严格的评分者，在这类信息发表后，会因为内疚而稍稍把评分提高一些。

耶鲁公开课 - 死亡课程节选

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