Polyketides
聚酮
🗣️ 情景例句
I can speak English as far as foreign languages are concerned.
就外语来说，我只会讲英语。
I only had time to visit Edinburgh.
我只有时间去爱丁堡。
They look young! Who's that man?
他们看上去好年轻啊！那个人是谁？