"We know that much of the training and the direction for terrorists comes from Pakistan and the border area with Afghanistan,"

VOA: standard.2009.12.11

But I know when I multiply a vector by a number, I get a vector in the same direction.

但是我所知道的是当矢量乘以一个常数,我会得到一个同方向的矢量

耶鲁公开课 - 基础物理课程节选

You just need to remember what's happening to z effective, which really tells us what's happening with all the trends, and once you know z effective, you can figure out, for example, what direction the atomic radius should be going into.

你只需要记住有效核电量的规律，实际上它会告诉我们所有的规律，只要你知道了有效核电量的规律，你就可以判断，比如，原子半径会向着哪个方向发展。

麻省理工公开课 - 化学原理课程节选

and as we all know radically turned to an opposite direction and the reason that it did.

正如我们所知道的，塔利班分子变成了一股更强大的势利。

普林斯顿公开课 - 国际座谈会课程节选

And, you know acceleration means either change of speed or change of direction.

你知道加速度意味着,不是改变速度就是改变方向。

麻省理工公开课 - 固态化学导论课程节选

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