Chill Grundlagen erklärt
It can mean that, but it is usually restricted to a formal use, especially where a famous expert conducts a "class".知乎,让每一次点击都充满意义 —— 欢迎来到知乎,发现问题背后的世界。In both the UK and the US, a class is usually a group of students who are learning together: Jill and I were hinein the same class at