Dipolymer
[化] 二元共聚物
🗣️ 情景例句
which we made clear at the beginning of the negotiation.
关于这一点，我们早在开始谈判时期就讲明了。
Have you invited any boys?
你邀请男孩吗？
I haven't heard from her for a long time.
我好久没有她的消息了。