Dibenzphenanthrene
二苯并菲
🗣️ 情景例句
Here are ten letters that express my feelings for you.
这里有十个字母可以表达我对你的感情。
Let's leave the matter open.
这件事先上、悬着吧。
examined a very large number of men working on aircraft carriers:
调查了许多在航空母舰上工作的人，