Alkylammonium
烷基铵
🗣️ 情景例句
A 20% discount will be given when you shop at Makro.
你在万客隆买东西会有20%的折扣。
Check it to my final destination
把它托运到我的目的地。
and in the course of a few hundred miles reaches the true ocean floor at 2,500-3,500 fathoms.
一直延伸到几百英里远深达2，500至3，500的地方，