我们讨论的是概率，但我们说的是最可能的半径，离原子核更远。

We are talking about probability, but what we're saying is that most probable radius is further away from the nucleus.

youdao

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。

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.

youdao

译：原子内的电子在离核不同的位置上绕核运动，在 某些原子中对离核最远的电子只有很微弱的力将其束 缚在原子内。

Electrons of atom have orbits at different distances from the nucleus. For some atoms the electrons in the farthest orbits have only weak forces binding them to the atoms.

youdao