The castle was built during World War II as an air defense base against German bombers.

该城堡建于二战期间，是个用于抵御德国轰炸机的防空基地。

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To conduct practices efficiently, a coach must organize work on all aspects of baseball-hitting, pitching, playing defense, base running. Of course, work in these areas usually occurs simultaneously.

为了让训练更有效率，教练必须组织训练工作的所有方面——打击，投球，守备，跑垒，而这些项目的练习往往是同时进行的。

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In two thousand six, Defense Secretary Robert Gates advised President George W.Bush to base a missile defense system in Europe.

VOA: special.2009.09.19

Although the revised plan involves anti-ballistic missiles installed at a former air base in Poland, defense experts say Moscow perceives the new project as less threatening to its security.

VOA: standard.2009.10.23

It will require further contraction of military bases, ports, airfields and depots and the defense industrial base and its suppliers.

CENTERFORSECURITYPOLICY: A fatal 'box canyon' for the G.O.P.?

This level exceeds that utilized by 95 percent of the American defense industrial base and is vastly in excess of what is currently available to the Soviet Union.

CENTERFORSECURITYPOLICY: Center For Security Policy

The serious downsizing and disruption of the defense industrial base - including in some cases the likely elimination of small businesses that provide unique parts for the supply chain.

CENTERFORSECURITYPOLICY: Destroying The U.S. Military From Within