The teacher rigorously enforces the classroom rules.

老师严格地执行课堂规则。

Teachers must enforce classroom rules to ensure a good learning environment.

老师必须执行课堂规则以确保良好的学习环境。

I can ' t believe that girl breaks all of the classroom rules.

我不相信那个女孩违反了所有的课堂纪律.