Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
No answer is also answer.
不回答也是一种回答。
I am on my way to the grocery store.
我正在去杂货店的路上。