“大家知道警察不在或他们正在做其它事情，”圣莫·尼卡市议会成员鲍比·施莱佛(Bobby Shriver)说道。

"People know the cops aren't around or they are working on other stuff," said Bobby Shriver, a member of the Santa Monica City Council.

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“这就像进化的扬声器，扬声器引导声音的方向而非泛传给所有对象。”莱佛德非致命武器计划的尼尔·大卫森说。

It is like an advanced form of loudhailer which specifically directs the sound rather than bathing everyone "says Neil davison of the non-lethal weapons project at the university of Bradford."

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