在军事史上 ,站岗放哨一直是最重要而又最危险的军事任务之一。第一次世界大战的有关资料表明 ,哨兵的寿命比其它士兵的寿命都短 ,他们往往悄无声息地殒命于敌方侦察兵手下。在当前高科技迅猛发展的今天尤为如此 ,敌方借助夜视设备在几英里之外就能发现并杀死哨兵。因此 ,如何 In military history, guarding sentries has been one of the most important and most dangerous military tasks. Information from World War I shows that Sentinels have a shorter lifespan than the rest of the soldiers, who often silently dwell on enemy scouts. This is especially true today with the rapid advance of high technology, where hostile forces find and kill sentries a few miles away with night vision equipment. So how?