If you feel exposed without a text book, you really have to have a textbook, John actually I'm going to reuse that word, John, at least suggest it, on the course website.

如果你觉得没有教科书就缺乏安全感的话，那你真的需要一个了，其实我应该重新使用这个词儿，至少是建议，你能在课程网站上找到。

麻省理工公开课 - 计算机科学及编程导论课程节选

And so you have to go back to the drawing board and realize Bubble Sort or whatever it is you're using just isn't enough to snuff, I need to come up with something more clever.

因此，你必须重新开始,而且会意识到冒泡排序,或你正在使用的方法并不理想，我需要提出一种更好的方法。

哈佛公开课 - 计算机科学课程节选

The engine is a prior existing part, so can we conclude then that from the fact that argument from recycling, cars get reused, get rebuilt, when cars get destroyed, its parts is still around.

发动机是之前就存在的一个部分，所以我们可否得出结论说,根据源于轮回的论证，汽车重复使用，重新组装,汽车坏了的话，它的零件还在。

耶鲁公开课 - 死亡课程节选