Epimerism
差向异构
🗣️ 情景例句
OK, let's begin. To our friendship!
可以，开始吧，为了友谊！
How long will it take you to have it counted?
你要多少天才能把它计算好？
From the moment he arrived there, he kept on pestering his doctor to tell him when he would be able to go home.
从他进医院那一刻时，他就缠住医生，让医生告诉他什么时候能回家。