Dinaphthylamine
二萘胺
🗣️ 情景例句
We propose a change.
我们建议做一下改变。
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
Most of the parents will not be able to pay much money.
多数家长是付不起很多钱的。