Polyhydroxyketone
[医] 多羟酮
🗣️ 情景例句
I think I'm quite proficient in both written and spoken English.
我认为我在英语读写方面相当熟练。
Save while you may, no morning sun lasts a whole day.
能节俭时就节俭，朝阳难照一整天。
Tony saw me and came and sat at the same table.
托尼看见了我，就走过来和我坐到一张桌子前。