英和和英

to observe the rules―keep the regulations

stick to the rules

Stick to the rules.

keep [preserve] discipline

to observe the rules

Mind the rules.

a rule to be observed

toe the line

adhere to a rule

Follow these rules.

rigid observance of rules

flout the rules

to adhere to the rule

to establish a rule

the act of following a rule

to lay down a rule―reduce anything to rule

The discipline is strictly observed.

to go by rule―act upon a rule

to break the regulation―violate the rule

He observes the rules conscientiously―scrupulously―religiously.

introduce a rule

provisional regulations

to apply a rule to a case

to conflict with the rule―clash with the regulation

deviate from a rule

to restrain one by rule

rules and regulations

to make a person infringe upon a rule

You must adhere to the rules

to be against a regulation