Quaternaries
[化] 季盐; 季铵盐类
🗣️ 情景例句
Oh, congratulations! That's nice.
啊， 恭喜你们！ 太好了。
If you can find another pair of tickets we'll have enough for a dozen people.
如果你能再找到两张，我们就可以有十二个人去了。
First, I'd like to tell you a few things about this factory.
首先，我想告诉你们有关这家工厂的一些情况。