He was diagonised with a brain tumor at age two and he fought a valiant effort for about five years but ultimately he ?.

他在两岁时被诊断出脑部长有一个肿瘤,与病魔经过了,近五年的勇敢搏斗,他最终还是离开了人世。

普林斯顿公开课 - 领导能力简介课程节选

And since we have two bars that are together like this, once they're both loaded up with electrons there's going to be negative charges that repel, so the electrons will want to get as far away as possible, and they're on their slow way to doing that, to getting as far away from each other as possible.

因为我们有两个棒像这样在一起，一旦它们加载了电子,就会因为有负电荷而排斥，所以这些电子就会,互相离开的尽可能远，它们的这个过程很慢，离开的尽可能远。

麻省理工公开课 - 化学原理课程节选