动词
中文翻译：反侦查
同义词：
['surveillance', 'counter-intelligence']
例句：
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1. The police were conducting a thorough investigation into the disappearance of the missing person.
警方正在对失踪人员的消失进行彻底调查。
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2. The spy agency was using sophisticated technology to detect and foil any attempts at sabotage.
间谍机构使用尖端技术来检测和挫败任何破坏企图。
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3. The military intelligence unit was tasked with monitoring foreign espionage activities in the region.
军事情报单位被指派监测该地区的外国间谍活动。