Chalcone
[化]查耳酮(芳基烯丙酰芳烃, 苯丙烯酰苯)
🗣️ 情景例句
My parents are expecting to see good grades this semester.
我父母希望我这个学期取得好成绩。
There are only two minutes left.
只剩两分钟了。
Perfume is not exempt from import duty.'
香水要上进口税的。”