Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
Oh, Mother. I forgot you still had it.
噢， 妈妈。我忘了你仍然保留着它。
A liar is not believed when he speaks the truth.
骗子说真话，也没人相信。
Yes, I think they'll return next month.
是的，我想他们下个月回来。