Sipeimine
[化] 西贝母碱
🗣️ 情景例句
I'm sick of waiting around like this.
我对这样干等着感到厌烦。
We won't go to war.
我们不希望诉诸于战争。
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，