The main role of the police is to uphold and enforce the law. 警方的主要任务是维护和执行法律。
Troops were sent into the area to enforce the treaty. 部队被派遣到这一地区来执行该条约。
The only weapon the court has to enforce cooperation is the threat of sanctions. 法院强制他人合作的惟一手段就是处罚。