Definition: an official instruction about what you must or must not do Level: B1
你不能在学校吸烟，这是违反规则的。
You can't smoke at school, it's against the ___rules.
学生应该始终遵守规则。
Students should always follow the ___rules.
我的高中有很多规则。
There're plenty of ___rules in my high school.
