But if you don't actually do anything with it, -- it simply disappears, and, therefore, it's -- well done, classmate Number Two.

但是如果你的确是没有用它做任何事情，它只不过是看不见的，因此，它是-,做的好，第二号的同学。

哈佛公开课 - 计算机科学课程节选

But it's also helpful to think just for health and well-being in general, what might be done to improve the diet and this will be a good way to try to get at that.

但如果出于健康考虑,想想如何能改善饮食,也是很有益处的,这次的作业就是一个改善饮食的好方式

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选