So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.

还有方向，所以如果,你把粒子放在这下面，电场的方向相反,粒子会朝另一个方向运动。

麻省理工公开课 - 化学原理课程节选

So you can see, if it's spinning on its own axis in this direction we'd call it spin up, where as this way it would be what we call spin down.

你们可以看到，如果它绕自己的轴朝这个方向转,我们就说它是自旋朝上，这个方向我们叫它自旋朝下。

麻省理工公开课 - 化学原理课程节选

But if I join a fraternity and they pour cow poop on my head and make me stand in the rain for a month wearing pantyhose while they throw rocks at me I then think--after it I think "God, I went through a lot of stuff to get into this fraternity.

但如果我加入之前，他们要往我头上泼牛粪,要我穿着女内裤在雨中站一个月,他们还朝我扔石头,事后我就会想,”为了加入这个兄弟会我吃了不少苦头“

耶鲁公开课 - 心理学导论课程节选

So, then we go to thermodynamics and chemical equilibrium, and this is really about chemical reactions -- weather a reaction will go, will it be spontaneous, if there an equilibrium, what direction will the reaction be shifted in.

然后我们要讲到热力学和化学平衡,这都和化学反应有关，一个反应是否能发生,是不是能自发反应，如果存在化学平衡，它会朝什么方向移动。

麻省理工公开课 - 化学原理课程节选