Alkylammonium
烷基铵
🗣️ 情景例句
Well, I've got to run, Dad.
嗯， 我得赶紧走了， 爸爸。
A servant is known by his master's absence.
主人不在可以看出仆人的品行来。
The captain learnt from the letter that the name of the lost ship was the Karen.
从这封信中船长了解到沉船船名是“卡伦”号。