Pyrazolone
吡唑啉酮
🗣️ 情景例句
Thank you very much. So we can put our minds at ease.
非常感谢，这样我们就放心了。
Pigs may fly,but they are very unlikely birds.
猪儿纵会飞，终究不是鸟。
He has quite a few friends.
他有不少的朋友。