抱歉没有及时留意到这个贴。

I have been here before.

youdao

明知道会有人写这个，我还进这个贴找虐干嘛。

Why did I even come to this thread. I knew this would be here.

youdao

可能就是因为这个贴很多中国玩家突然出现在TL上然后发很幼稚的言语。

Andprobably that's the reason why there are so many chinese suddenly showup on TL and post immature words.

youdao

And I am going to put up this energy level diagram again.

我准备再次贴起,这个能级图。

麻省理工公开课 - 固态化学导论课程节选