In the U.S. in 2009, the latest data available, there were 558,493 missing persons reported under the age of 18, according to the Federal Bureau of Investigation's National Crime Information Center.

2009年美国的最新数据显示，根据联邦调查局所属的国家犯罪信息中心资料，有55.8万名18岁以下人员失踪。

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In the U. S. in 2009, the latest data available, there were 558,493 missing persons reported under the age of 18, according to the Federal Bureau of Investigation's National Crime Information Center.

2009年美国的最新数据显示，根据联邦调查局所属的国家犯罪信息中心资料，有55.8万名18岁以下人员失踪。

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Without a Trace is a fast-paced procedural drama about the Missing Persons Squad of the Federal Bureau of Investigation.

寻人密探组是非常引人入胜的情节系列剧，该剧讲述的是关于美国联邦调查局失踪人口小组的故事。

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"In 2008, we were tasked to undertake a review by the Serious Organised Crime Agency's UK Missing Persons Bureau to review any outstanding cases of unidentified bodies and remains, " said Det Sgt Kirby.

BBC: Thames Valley Police bid to solve eight cold cases

The Missing Persons Bureau, based at Bramshill Police College in Hampshire, is the national and international point of contact for all missing people and unidentified body cases.

BBC: What happens when someone goes missing?