事实上，建议在马里兰州蒙哥马利县和其他区域设置，警察部门作为最具成本效益的安全工具，为防止犯罪活动提供一个安全照明。

In fact, in Montgomery County Maryland and other locales, police departments recommend security lighting as one of the most cost-effective security tools available for deterring criminal activities.

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美国马里兰州巴尔的摩市将要求美国司法部调查该市的警察部门。

The U. S. city of Baltimore, Maryland will ask the United States Justice department to investigate the city's police department.

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