But when you start writing programs, especially when we get to web-based stuff where you want -- to check the user's input -- is it valid, is it an email address, -- and all these different scenarios -- it's actually often useful to be able to just enumerate them or rattle them off using this switching construct instead.

但是当你看是写程序时，特别是当我们,使用基于网络的东西，你想要,检查用户的输入-,它是合法的吗？它是不是一个电子邮箱地址？,所有的这些场景-,实际上它常常是有用的，当你用枚举结构列举它们,或者用它来快速地来说出它们。

哈佛公开课 - 计算机科学课程节选

Certainly, yeah. A number of them. Maybe too many to mention.

当然有了，是的。很多。不胜枚举。

我的专业 - SpeakingMax英语口语达人

Okay, and so on and so on.

诸如此类，不胜枚举。

耶鲁公开课 - 1945年后的美国小说课程节选