Epimeric
差向异构体的
🗣️ 情景例句
What did I forget?
我忘记什么？
As this is a special offer, we hope you won't miss this opportunity.
因这是特殊报价，希望您不要错失良机。
The man lay on the road. Luckly, he was not badly hurt. But he could not move.
他躺在路上。幸好他伤得不重。但他不能动。