/2 You can have it equal to plus 1/2, and that's what we call spin up, 1/2 or you can have it equal to minus 1/2, which is what we call spin down.

它可能会等于，我们叫它自选朝上，或者它等于负，我们叫它自旋朝下。

麻省理工公开课 - 化学原理课程节选

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

Because once things started moving, it tends to move in that direction.

因为一旦事物开始改变，他们就会有朝这个方向运动的倾向。

麻省理工公开课 - 计算机科学及编程导论课程节选

So the pink line is going to move towards the vertical, and the blue line is going to move towards the horizontal, and notice that the amount of effort that we generate, goes down dramatically, goes down in this direction.

粉色的线最后会趋向垂直,蓝色的线最后会趋向水平,请大家注意下我们付出的努力,会朝这个方向大幅减少

耶鲁公开课 - 博弈论课程节选

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

The rope is being pulled backwards by this guy, the T.

绳子也会被这个物体朝反向拽,拉力也是 T

耶鲁公开课 - 基础物理课程节选

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