Epimerization
差向[立体]异构(作用)
🗣️ 情景例句
Where did you come from?
你从哪里来？
Carol would like to eat Italian pizza.
卡罗尔喜欢吃意大利馅饼。
I could see a snake, a bear, a wolf, but no people.
我还看见一条蛇、一只熊、一只狼，但没有看见人。