Diacetylene polymer
[化] 二乙炔聚合物
🧩 词语组成解析
联乙炔, 丁二炔
🗣️ 情景例句
I'd love to come. But I have to be on duty this weekend night.
我是想过来，但我周末晚上得值班。
An old poacher makes the best keeper.
老偷猎者是最好的看守人。
Good afternoon! I've come to return your pan. Thank you very much for lending it to me.
下午好！我来还你锅。非常感谢你能把锅借给我。