So if I try to rotate my 2 atoms, you see that I have to break that pi bond, because they need to be lined up so that the electron density can overlap.

如果我要试着转动两个原子，你会看到我必须要打破一个π键，因为他们需要连接起来,让那些电子能够重叠。

麻省理工公开课 - 化学原理课程节选

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

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

And the gears begin turning and the bud opens, dot, dot, dot, dot.

齿轮开始转动,随即花蕾绽放,哒,哒,哒,哒

耶鲁公开课 - 死亡课程节选

I got to roll this one myself.

我必须自己把循环转动起来。

哈佛公开课 - 计算机科学课程节选

If you rotate it, you won't know.

如果它转动了,你也不知道

耶鲁公开课 - 基础物理课程节选

Suppose standing on the bridge next to the fat man, I didn't have to push him, suppose he was standing over a trap door that I could open by turning a steering wheel like that.

假设我站在桥上，胖子就在我旁边，我不用去推他，假设他踩在一扇活板门上方,而活板门可以通过转动方向盘来开启。

耶鲁公开课 - 公正课程节选

You spin this big wheel and it rotates for a while and then it stops at one number, but obviously a random number, because this wheel of fortune had all the numbers from zero to one hundred.

你转动那个大轮盘,它会旋转一会儿,最后停在一个数字上,显然是一个随机数,因为幸运轮盘可以指向,0到100的的任何数

耶鲁公开课 - 金融市场课程节选

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

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

Would you turn?

你会转动方向盘吗？

耶鲁公开课 - 公正课程节选