Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
I'm exhausted. I had to work until 2 o'clock this morning.
我累死了。我一直得干到今天早上2:00。
This is a radio.
这是一台收音机。
I'll have to check with our engineers.
我得请教工程师才行。