Peralcohol
[机] 过氧化合物
🗣️ 情景例句
He was a dull man and you had to explain things very slowly to him.
他脑筋迟钝，你必须慢慢地给他解释事情。
This is my second year of college, I'm a sophomore.
这是我上大学的第二年，我是二年级学生。
It's too far. The smaller one is nearer, and we've never been there before.
那个太远。小一点的那个近些，我们以前还从未去过那儿呢！