Prepolymerization
[化] 预聚合
🗣️ 情景例句
The selection here is very large, it may be difficult to choose.
这里有很多式样可以选，可能很难决定。
Have you drunk any coffee?
你喝过咖啡吗？
Just as that moment the train came into the station.
正在这时，火车进站了。