The police are guardians of law and order.

警察是法律和秩序的护卫者。

They claim to be the party of law and order.

他们声称自己是重视治安问题的政党。

The police are the preservers of law and order.

警察负责维持治安。

The government struggled to maintain law and order.

政府努力维持治安。

After the riots, the military was brought in to restore law and order.

暴乱以后，军队出动来恢复治安。