单词	countersurveillance
释义	countersurveillance noun coun·​ter·​sur·​veil·​lance ˌkau̇n-tər-sər-ˈvā-lən(t)s   also  -ˈvāl-yən(t)s,  or  -ˈvā-ən(t)s variants or counter-surveillance : methods and devices used for detecting or thwarting surveillance agents trained in countersurveillance When countersurveillance is employed by seasoned practitioners, it is used to identify the vehicles and individuals conducting the surveillance … This information is then used by the individual to thwart the hostile surveillance. Glenn McGovern —often used before another noun countersurveillance camerasa counter-surveillance specialist Word History First Known Use 1959, in the meaning defined above
随便看	Daughter of Mary daughter-in-law daughterboard daughterboards daughterhood daughterless daughterlier daughterliest daughterliness daughterlinesses daughterlings daughterly daughters daughters-in-law Daumier daunch dauncy daunder daundered daundering daunders dauner daunomycin daunomycins daunorubicin

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