要从最基本层面理解化学,我们必须观察分子中电子的舞蹈。#
一个故事没有开始或结束:人们任意选择那个经验时刻来回顾或展望。
只怕小人有才能,帮助有才的小人后患无穷;只怕君子无才,无才而处事,即使贤德又有什么补益。
Every word is a step towards understanding.
I was not born blind, I became blind at the age of 12, but I never felt like a victim.