Polydienes
(polydiene 的复数) 聚二烯
🗣️ 情景例句
Hi.
嗨。
The roofer is patching the roof with metal.
屋面防水工在用铁皮修补屋顶。
On the way home, he asked Jenny if she had enjoyed the speech.
在回家的路上，他问珍妮是否喜欢他的祝词。