You know from experience if you've ever mixed them to make salad dressing, they don't mix too well. And you may know that if you heat them up, they mix much better.

经验告诉我们,你无法把它们混合做成色拉酱调料，他们不会很好的混合，但是你也知道,如果我们把他们加热，就能够混合的更好。

麻省理工公开课 - 热力学与动力学课程节选

These are difficult lines physically to read, and they may very well be the most painful lines in the entire poem from an emotional perspective.

从情感的角度看待整首诗，这几行比较难懂,读起来也比较费力。

耶鲁公开课 - 弥尔顿课程节选

Why should citizens of one state, namely one's own have any moral priority over the citizens of another state when, again, we don't know them and we may well be mistaken in our assumption ? that they are enemies or friends?

为何一国的公民，即为何某人能拥有,凌驾其它城邦公民的道德优势,尤其是我们根本不了解他们,我们可能误将他们,错认为是敌人或朋友？

耶鲁公开课 - 政治哲学导论课程节选