Epimerization
差向[立体]异构(作用)
🗣️ 情景例句
Why are you back so early?
你们怎么这么早回来？
My aunt will come to live with me for some days.
我阿姨会来和我住一些日子。
and since most medical men in the Health Services are overworked and have little time for offering time-consuming and little-appreciated advice on such subjects as diet,
因为卫生部门的大多数医生都超负荷工作，所以没有多少时间提出一些既费时而又不受人欢迎的忠告，如注意饮食、