请教一道英语题,谢谢!

means

law and order作为一个整体,用单数

law and order

守法循序;社会治安;公***秩序;法律与秩序;法治;严肃法纪(赞成、主张用严厉措施来制止犯罪和暴力)

例句:

Remonde says once law and order is restored, martial law will be lifted.

雷蒙德表示,一旦恢复法律和秩序戒严令将会被取消。

If law and order is not preserved, neither the citizen nor his property is safe.

如果法律和秩序得不到维护,公民的人身和财产就得不到安全。