它是一个好主意学习所有这些'预先非有不可的'技术，不过你不一定要在这一个章节中知道每件事物。

While it's a good idea to learn all of these 'prerequisite' skills, you don't have to know everything in this chapter.

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If one were faced with starvation, then seeking out fat as we discussed before, is a pretty good idea, but if one is not deprived of calories, then having fat may not be so helpful.

如果一个人面临饥饿,像我们之前讨论的去寻求脂肪,是个好主意,但是如果一个人不消耗热量,那么摄取脂肪就没什么用了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Say, Binky, I don't think dereferencing y is a good idea because, you know, setting up the pointee is a separate step and I don't think we ever did it.

你说，Binky，我不认为不关联y是一个好主意,因为，你懂的，调定指针数据是一个单独的步骤,我不认为我们这样做了。

哈佛公开课 - 计算机科学课程节选