Dinaphthylmethane
二萘甲烷
🗣️ 情景例句
Think globally, act locally.
放眼全球， 从自身做起。
No, I'm sorry, sir. We don't accept checks.
先生，对不起，我们不接受支票。
He informed the station at once, but no one there was able to explain the mystery.
他马上把情况报告了该基地，但那里的人没有一个能解释这到底是怎么回事。