Prepolymer
[化] 预聚物
🗣️ 情景例句
Why are you leaving your present job?
你为什么要放弃目前的工作？
A good book is a best friend who never turns his back upon us.
一本好书，莫逆之交。
There's no need for that. We'll have dinner another time.
不必为那件事惭愧。我们改个时间再共进晚餐吧。