Polyketide
聚酮化合物
🗣️ 情景例句
Relax! Be patiend and enjoy yourself.
放松点！要有耐心，并让自己快乐！
The doctor advised me to drink plenty of water.
医生劝我要多喝水。
What a shame! Never mind, I'll write to him.
真遗憾！不要紧，我会给他写信的。