Quaternaries
[化] 季盐; 季铵盐类
🗣️ 情景例句
You'll probably want the family car
你也许需要用家里的车
We have a wide selection of sweaters that will appeal to all ages, and in particular the teenager market which you specified.
我们有各种各样适合各个年龄层次的羊毛衫，特别是您专门提到的青少年市场。
I don't understand! What do you mean? asked Mrs Brown.
“我不懂！你说的是什么意思？”布朗夫人问道。