🧩 词语组成解析
class
[klæs]
n. 班;等级;阶级;种类;
vt. 把…归入某等级,把…看作(或分类、归类);把…编入某一班级;
adj. 很好的,优秀的,出色的;
vi. 属于…类(或等级),被列为某类(或某级);
🗣️ 情景例句
It was not until yesterday that I noticed it.
我一直到昨天才注意到它。
He that is angry is seldom at ease.
怒者寡宁。
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,