Prewritten
大学 Collegea. 预先写的
🗣️ 情景例句
a way to encourage reading.
鼓励阅读的办法。
What point are you trying to make?
你正在试着给出什么观点？
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，