And it follows qualitatively from just your ordinary observations a bout the direction in which things go spontaneously, right.

定性地来说,就是你们日常生活中观察到,自发进行的物理现象,会有方向性。

麻省理工公开课 - 热力学与动力学课程节选

So there's different aspects. There's many people here who are focused on the local government,

所以有不同的方向。这里有好多人专注于本地政府，

肯尼迪学校 - SpeakingMax英语口语达人

So any time you have two atoms bonding, the bond axis is just the axis that they're bonding along.

任何时候如果你有两个原子成键，键轴就是它们成键的方向。

麻省理工公开课 - 化学原理课程节选

We'd sort of have some reason to believe in the soul until we sort of see what next argument comes down the road.

我们可能会有理由相信灵魂的存在,直到我们沿着这个方向探究到其他论证的存在

耶鲁公开课 - 死亡课程节选

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

But if I see you through the glass, the object is going on some trajectory, which has got both up and down and horizontal motion.

但是如果我透过窗户看到你,这个物体沿着某个轨迹运动,既有上下,也有水平方向的运动

耶鲁公开课 - 基础物理课程节选

These are the things that we do best and where we have advanced course work available in these three categories and so I'm going to emphasize these three but we'll talk about all of these subjects as we go through the course.

这是我们做的最好的三个方向,在这三个方向下我们开设有高阶的课程,因此我会重点讲这三个方向,但随着课程的进行,所有的主题我们都会讲到

耶鲁公开课 - 生物医学工程探索课程节选

There's a lot of different, different paths that this career can go in.

这一方向的研究有很大的发展空间。

治疗心灵 - SpeakingMax英语口语达人

The second particle was deflected almost not at all. But what he could tell from the fact that there was a second particle at all, and the fact that it was in this direction, is that in addition to his negative particle, he also, of course, had a positive particle that was within this stream of rays that were coming out.

粒子的强烈信号,有着强烈的对比,第二个粒子几乎，不发生偏转，他能判断这是，第二个粒子的原因是它在这个方向,所以在出射射线中,除了有带负电的粒子外。

麻省理工公开课 - 化学原理课程节选

But since it is a component it can have a direction, too, so can go up l between negative l and positive l.

但因为它是个分量,它是有方向的，所以它可以,从负的l一直到正的。

麻省理工公开课 - 化学原理课程节选

This is the reason behind saying a vector has a magnitude and a direction.

这就是矢量既有大小也有方向的原因

耶鲁公开课 - 基础物理课程节选

This vector i prime has got a horizontal part, This kind of trigonometry you should know all the time.

矢量 i' 有一个水平方向的分量,这类三角关系你们应该已经很熟悉了

耶鲁公开课 - 基础物理课程节选

We learned that a vector is a quantity that has a magnitude and a direction.

我们已经知道矢量是一个,既有大小又有方向的量

耶鲁公开课 - 基础物理课程节选

They're colored different here to indicate one new difference that you know about now, and that's that there is an orientation, there's an up and down on the chain.

这里被涂成不同的颜色,来表示另一个不同之处,它是有方向的,表示双链一条向上,一条向下

耶鲁公开课 - 生物医学工程探索课程节选

But, you know, in 2D, the options are not just left and right or north and south, but infinity of possible directions in which I could go those 5 km.

但在二维空间中,不仅可以向左向右或者向南向北,我在走那5公里的时候可以有无数个方向

耶鲁公开课 - 基础物理课程节选

It tells you when a particle moves in a circle, it has an acceleration in a negative R direction, namely directed towards the center.

它告诉你当一个物体在圆周上运动时,它有一个在 -R 方向的加速度,也就是说是直接指向圆心的

耶鲁公开课 - 基础物理课程节选

Synthesis always occurs in one direction and that makes sense to you now because you know there's a directionality and the chemistry is different going one way than the other and this DNA polymerase only works on the chemistry going in one direction.

NA复制过程是单向的,现在你们该明白原因了,因为DNA单链有方向性,DNA在两个方向上化学性质不同,DNA聚合酶,只在一个方向上起作用

耶鲁公开课 - 生物医学工程探索课程节选

So pi bonds have electron density both above and below the bond axis, but they actually have a nodal plane at this z, this bond axis here.

键在键轴之上,和之下都有电子密度，但它们在z方向有节面，这是键轴的地方。

麻省理工公开课 - 化学原理课程节选