Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
Have you ever held a secretarial position?
你曾当过秘书吗？
Who loseth liberty loseth all.
失去自由即失去一切。
Where does the teacher stand?
老师站在哪里？