在学校，我们有更多规则——不要吵闹，不要在课堂上吃东西。

At school, we have more rules — don't be noisy, don't eat in class.

老师要求学生们在上课时不要吵闹。

The teacher asked the students not to chao during the lesson.

请不要吵闹，这是公共场所。

Don't be so noisy; this is a public place.

请不要吵闹。

No noise, please.

在船上要保持安静，不要吵闹，要仔细听清楚船员的要求。

Please be quiet on the boat and listen to the sailor's requests carefully.