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Many people are active in helping service organizations (组织) like the Red Cross.

很多人积极投身于红十字会等服务组织的协助工作当中。

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Typically, the number of active service class periods in a system should not exceed 30.

通常，系统中的活动服务分类周期的数量不应该超过30。

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Other Kennedys today are active in politics and public service.

VOA: special.2009.08.29

The U.S. military has alleged that Stein's postings violated military regulations prohibiting partisan political statements while in active service in the military.

CNN: Marine's Facebook posts on Obama go too far

The United States has 27 active Ticonderoga-class guided missile cruisers in active service.

BBC: News | In Depth | Military Fact Files

Afghan President Hamid Karzai said the attackers wanted to rupture good relations between Afghanistan and India, while the Afghan interior ministry said it believed the attack was carried out "in co-ordination and consultation with an active intelligence service in the region".

BBC: Bomb rocks India embassy in Kabul