Polydiolefin
聚二烯烃
🗣️ 情景例句
Yes, I remember. You were a great help.
是的， 我记得。你帮了个大忙。
To intercept
阻止
It's a waste of time reading that book. It's rubbish.
看那本书真是浪费时间。那简直是垃圾。