And, if you take all of these ideas, omnidirectional and unsaturated, it means that ions can keep glomming on.

如果你注意所有的想法，无方向性和不饱和性，意味着离子能够保持攫取状态。

麻省理工公开课 - 固态化学导论课程节选

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

But, in addition, the field is continuing to radiate so it is unsaturated and it is omnidirectional.

同时，这一领域仍然在扩大,所以这是不饱和的，也是无方向性的。

麻省理工公开课 - 固态化学导论课程节选

The nucleotide has a directionality, there's an up and a down to it and it's going to turn out the chain that's formed by polymerizing these has a directionality as well and that's important in defining the structure.

核苷酸有方向性,有上端和下端,核苷酸长链,是由核苷酸沿一个特定方向聚合而成的,这在定义结构时很重要

耶鲁公开课 - 生物医学工程探索课程节选

First of all, it is omnidirectional.

首先，是无方向性。

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