Naphthophenanthrene
二苯并蒽
🗣️ 情景例句
Mr. Malcolm Stewart, and it looks like a personal letter.
Malcolm Stewart先生收 ，而且看来是一封私人信件。
That suit looks very good on you.
那件西装看起来很适合你。
We have mainly adopted some usual international practices.
我们主要采取了一些国际上的惯例做法。