在课堂上保持沉默用英语怎么说

"to maintain silence in the classroom" 是一种保持在课堂上沉默的说法。来源是从保持静默的意思，表示不说话的意思。

例句：

The teacher asked the students to maintain silence in the classroom during the exam.
老师要求学生在考试时保持课堂上的沉默。
We were asked to maintain silence in the library.
我们被要求在图书馆保持沉默。
I find it hard to maintain silence during a long meeting.
我发现在长时间的会议中保持沉默很难。