So it's very important to be keeping in mind that any time you see a double bond, you have a pi bond there, so you're not going to see any rotation around the bond axis.

所以你们要记住,任何时候你们看到一个双键，这里面有π键，你们不会看到关于键轴的任何转动。

麻省理工公开课 - 化学原理课程节选

So really, you can not ever rotate a double bond, it makes your molecule very rigid.

实际上，你不能转动一个双键，它使得你的分子很坚固。

麻省理工公开课 - 化学原理课程节选

Poetry is a response to the daily necessity of getting the world right."

诗歌是对世界正确转动的琐事的反应“

耶鲁公开课 - 现代诗歌课程节选

We're staying away from that, really quickly, especially with the cameras rolling.

我们得十分迅速的远离它，尤其是在摄像机转动的时候。

麻省理工公开课 - 计算机科学及编程导论课程节选

So that's the important take-away message from this slide. If we think about these different types of lights, microwave light, if it's absorbed by a molecule, is a sufficient amount of frequency and energy to get those molecules to rotate. That, of course, generates heat, so that's how your microwaves work.

重要的信息，如果我们看看,这些不同种类的光，微波,如果被分子吸收，它的频率和能量可以,使分子转动,这当然的，会产生热量,这就是你们微波炉的工作原理。

麻省理工公开课 - 化学原理课程节选