So, you already have a hint that methyl groups are never in the middle, they always have to be on the outside.

那么，你已经得到了一个提示,那就是甲基永远都不可能在中间，它们总是在外侧。

麻省理工公开课 - 化学原理课程节选

Wirr Minus w irreversible, this is the work which is done to the environment by the system, -Wrev minus w irreversible is always smaller than minus w reversible.

一点提示，不可逆过程中系统,对外界做的功，总是小于,之前我们。

麻省理工公开课 - 热力学与动力学课程节选

There are a lot of ways in which a red light means neither "stop" nor "go," but we are sort of confining ourselves so far to the ways in which a red light has something to do with locomotion or the lack thereof.

很多时候红灯既不表示停,也不表示走“,但是我们却惯性的认为,红灯就是提示开始或者停止移动。

耶鲁公开课 - 文学理论导论课程节选