Epimerization
差向[立体]异构(作用)
🗣️ 情景例句
How does love differ from leave?
Live和"Levve有什么不同？
He works best who knows his trade.
内行的人做他的事一定会做得最好。
Will you help me fix up this sheet? Then it'll give us some shade.
帮我固定一下布单，好吗？这样可以给我们一些阴凉。