Jamming concerns are nothing new, and they're not unique to security systems.

干扰问题并不是什么新鲜事，也不是安全系统独有的问题。

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The health security systems of many countries are undergoing considerable transformation.

许多国家的卫生安全系统正在经历重大变革。

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Mr. Spletzer says these robotic technologies are finding uses in space exploration, medicine, and security systems.

VOA: special.2011.06.21

However,in the light of the new development, we have reinforced our security systems in all our airports,".

VOA: standard.2009.12.28

Cities in the United States and Europe have increased security in and around their mass transportation systems.

VOA: special.2010.04.03

Kevin Mitnicks crime was to thumb his nose at the costly computer security systems employed by large corporations.

FORBES: The demonizing of a hacker

The director of Nicaragua's National Police described him as an expert at violating computer security systems.

CNN: Fugitive on 'Most Wanted' list returned to U.S.

Hotels, not consumers, have to be relied on to deal with their vulnerable security systems.

FORBES: Move up http://i.forbesimg.com t Move down