Alkylammonium
烷基铵
🗣️ 情景例句
The movie was a box office success.
这电影的票房很成功。
A man becomes learned by asking questions.
要长学问，就得多问；多问则业精。
It also provides--and some student sociologist might care to base his thesis upon the phenomenon--an escape of another kind.
学社会学的大学生来露营是另一种形式的摆脱现实，他们的目的很可能是根据观察到的露营现象去写论文。