Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
It's my fault. I really feel bad about it.
是我的错。 我真的感到很难过。
The style is the man.
文如其人。
Custom has not commonly been regarded as a subject of any great moment.
风俗一般未被认为是什么重要的课题。