Stereoregularity
立构规整性
🗣️ 情景例句
Oh, it was nice meeting all of you.
哦， 很高兴会见你们各位。
Generally speaking, a contract cannot be changed after it has been signed by both parties.
一般来讲，合同一经双方签订就不得更改。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，