Epimeride
[化] 差向异构体
🗣️ 情景例句
Sunday's their big day.
星期天是他们大生意的日子。
This part of the country is very hilly.
这个国家这一部分有很多丘陵。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。