Obviously we don't expect you to know exactly what the distances are, but you should be able to compare them relatively.

当然我们不要求你么,要能知道具体这些位置是多少，但你们要能够相对比较它们。

麻省理工公开课 - 化学原理课程节选

But can you see that the centers of electron deficiency lie on a sphere equidistant from the center?

但你看得到么,缺电子的地方分布在,与中心等距的一个球面上？

麻省理工公开课 - 固态化学导论课程节选