a foolproof security system
... a foolproof security system 可靠的安全系统 A Foolproof Identification System 可靠鉴定体系 FIS Foolproof Identification System 最简易识别系统 ...
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a foolproof security system
一个万无一失的安全系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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"You cannot build a foolproof system for air security unless you are willing to slow the whole air system down to a crawl and institute very, very invasive procedures before Americans get on airplanes,".
VOA: standard.2009.12.30