Polyketides
聚酮
🗣️ 情景例句
taking a vacation together--with the family.
要一起渡个假， 全家一起。
Thank you for your kind cooperation.
谢谢您的合作。
Do you see that notice? It says No Camping -- in case you can't read!'
你们看到那个布告牌了吗？上面写着‘禁止野营’－－除非你们不识字！”