If you give a sign, on top of the number, that takes care of all ambiguity in one dimension.

如果你在数字前加一个符号,就把一维运动的所有的歧义解决了

耶鲁公开课 - 基础物理课程节选

If I'm now working in one dimension, it's obvious because I'm not using any vectors.

假设我现在只考虑一维的情形,这很明显,因为我没有用矢量

耶鲁公开课 - 基础物理课程节选

So I would call it a one-dimensional crystal.

所以我们称之为一维晶体。

麻省理工公开课 - 固态化学导论课程节选

Everything is the same as in 1D, except everybody's a vector now.

所有的都和一维下是相同的,除了都换成矢量了

耶鲁公开课 - 基础物理课程节选

You use it all the time, but maybe along one dimension.

你也许在一维空间里一直在用它

耶鲁公开课 - 基础物理课程节选

I think you can tell by analogy with what I did in one dimension that the position of that object at any time t is going to be the initial position plus velocity times t plus one half a t square.

你们可以类比一下我在一维情况下的结论,这个物体在任意时刻 t 的位移,等于初始位移,加上 v ? t + 1/2 ? a ? t^2

耶鲁公开课 - 基础物理课程节选