Epimer
n. [化]差向(立体)异构体,差位(立体) 异构体
🗣️ 情景例句
We haven't heard from him for weeks but we're still hoping for a letter.
我们已经有几个星期没有他的消息，但仍然盼望着他的来信。
It is not the gay coat that makes the gentleman.
君子在德不在衣。
Right, I'll make a note of that.
没错，我把它记下来。