law and order作為壹個整體，用單數
law and order
守法循序；社會治安；公***秩序；法律與秩序；法治；嚴肅法紀(贊成、主張用嚴厲措施來制止犯罪和暴力)
例句：
Remonde says once law and order is restored, martial law will be lifted.
雷蒙德表示，壹旦恢復法律和秩序戒嚴令將會被取消。
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維護，公民的人身和財產就得不到安全。