Chalcone
[化]查耳酮(芳基烯丙酰芳烃, 苯丙烯酰苯)
🗣️ 情景例句
He made an impressive speech.
他发表了一篇感人的演讲。
I can give you one for $24.00 a day or $158.00 a week.
租一辆一天24美元，一周158美元。
But this does not matter, for, as he has often remarked, one is never too old to learn.
但这没有关系，因为正如他常说的那样，人要活到老学到老。