So, I want to contrast that with another concept that seemed to be opposing ideas, and that is thinking about not how far away the most probable radius is, but thinking about how close an electron can get to the nucleus if it's actually in that orbital.

我要将它和另外一个,看起来相反的概念相比较，我们不是考虑,最可能半径离原子核有多远，而是考虑如果电子在那个轨道上,能多接近原子核。

麻省理工公开课 - 化学原理课程节选

What I just spent many lectures discussing is the fact that we can not know how far away an electron is from the nucleus, so we can't actually know the radius of a certain atom.

我花了这么多课时所讨论的正是我们,不可能知道电子离原子核有多远这一事实，因此我们不可能知道某个原子的半径。

麻省理工公开课 - 化学原理课程节选

It's not complete and it's not accurate, but it's OK to kind of think of it in terms of how far we're getting away from the nucleus.

这并不完整，也不精确，但是假如只是想想,我们在离原子核越来越远的话，还是没问题的。

麻省理工公开课 - 化学原理课程节选