A sound system of law enforcement is necessary because poorly enforced laws cause crime and violence.

我们有必要创造一个健全的执法体系，因为执行不力的法律会带来犯罪和暴力。

Multiroom sound system?

多区域音响系统？

Your car's sound system is amazing.

你的车载音响系统实在太震撼了。

The sound system for the film used 24 speakers.

这部电影采用了24扬声器的声音系统。

We are all very impressed with your super cool sound system.

我们对你那超酷的音响系统印象深刻。