老师发现很难让她的班级保持秩序。

The teacher found it hard to keep her class in ___order.

当示威开始变得暴力时，警察被叫来恢复秩序。

As the demonstration began to turn violent, the police were called in to restore ___order.

经过一些激烈讨论后，主席宣布会议恢复秩序。

After some heated discussion, the chair called the meeting to ___order.