So, I infer the existence of atoms based on the fact that doing that allows me to explain things that need explaining.

所以说我推测原子的存在是基于,该假设使得我能够解释,所需解释的一些现象

耶鲁公开课 - 死亡课程节选

When I posit the existence of atoms with certain structures and certain sort of ways of interacting and combining and building up, when I posit atoms, suddenly I can explain all sorts of things about the physical world.

当我假设原子以某种特定结构存在,以一定的方式相互作用,互相结合,集聚,通过假定原子存在,我立即就能够解释,物理世界中各种各样的现象了

耶鲁公开课 - 死亡课程节选

So, let's say we have an atomic number of 3, 3 that means we have 3 electrons, so we better hope to get our neutral atom that we have a charge of plus 3in the nucleus.

这也是很合理的，因为Z就是原子序数，假设原子序数是，那就有3个电子，那我们就希望,性原子有个带3个正电荷的原子核。

麻省理工公开课 - 化学原理课程节选