No permitting for anything such as talking some trifle with classmates , sleeping , doing the other activities irrelevant for the teaching contents in class.
No permitting for anything such as talking some trifle with classmates , sleeping , doing the other activities irrelevant for the teaching contents in class.
（上课期间，不允许与同学谈论琐事，睡觉、做其他于课堂内容无关的活动。）