Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
What's your occupation?
你的职业是什么？
I appreciate your helping me.
感谢你的帮助。
It is a harmless bait, but it litters up her desk to such an extent that every time she opens it, loose bits of paper fall out in every direction.
这种习惯无害，只把写字台里堆得满满当当，以致每次打开抽屉总能带出许多纸片四处飞扬。