They posted the letters to their handlers, hoping that counter-espionage experts would be fooled by the seemingly innocent pictures. 间谍将藏有机密的信件送到邮局,他们希望这些看上去毫无意义的图案能骗过盟军的眼睛。
Counter-espionage and security work were to occupy most of Walter's time for the next four years. 和间谍遭遇战以及秘密工作占据了沃特随后四年的大部分时间。
Operate the anti-virus software or counter-espionage software scanning, once find some unusual projects are removed immediately. 运行防病毒软件或反间谍软件扫描,一旦发现一些异常的项目立即清除。
Espionage undertaken to detect and counteract enemy espionage. a Bureau that runs espionage operations. counter-espionage activities 反间谍活动对发现和阻碍敌人间谍活动而进行的间谍活动
As the war went on, counter-espionage officials developed ways of spotting suspicious letters. 随著战事推进,英国反间谍工作人员总结出了许多限免可疑信件的方式。