Epimeric
差向异构体的
🗣️ 情景例句
I see him on the train every day but we are not on speaking terms.
我每天都在火车上见到他，但彼此没有说过话。
Because I know many of my colleagues who work harder even with a greater dedication than I do.
因为我有很多的同事工作得更努力，做出一贡献更大。
How can we set up an account with you?
如何才能跟你们设立记帐户头呢？