Copolymerisation
[建] 共聚多酯
🗣️ 情景例句
Ah, you are an early bird then!
你原来是早起的人。
All time is no time when it is past.
光阴一去不复返。
Suddenly the door of the storeroom was opened and a man entered.
突然贮藏门开了，一个男人走了进来。