Polyaddition
加(成)聚(合)作用
?? 擴展釋義
【化】 聚加成反應; 逐步加成聚合
??? 情景例句
All right, let's get down to business.
好，我們來談正事吧。
One honest word is better than two oaths.
兩句誓言不如一句實話。
'At ten to eight.I bought a paper and waited for the train.'
“7點50分。我買了張報紙，等著車來。”