Epimeride
[化] 差向异构体
🗣️ 情景例句
Who's in charge here?
这儿谁负责？
When did you do homework?
你什么时候做家庭作业？
OK. And we'd better ask Mom whether it's cheap enough!
好的。我们最好是问问妈妈价钱是否便宜！