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。 The usual British word for this is course : a course rein business administration . Class can also mean one of the periods rein the school day when a group of students are taught: What time is your next class? British speakers also use lesson for https://louishouzf.suomiblog.com/das-5-sekunden-trick-für-flight-49411350