Polydienes
(polydiene 的复数) 聚二烯
🗣️ 情景例句
and do it while I talk to my secretary.
我去和秘书说个话。
I'm worried about the appearance of the floor.
我担心地板的外观。
People have been talking of it a lot recently.
近来人们对这事谈得很多。