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Caught in a BEAR hug 落入BEAR怀抱 Robotics: A newly designed robot can recovercasualties from battlefields, 机器人技术：一种新型机器人能够从战场上救回伤员， and might also be able to make itself useful tosoldiers in other ways 或许还能以其他方式为士兵服务。 Carrying out an important duty 执行一项重要任务 KILLING a soldier removes one enemy from the fray. 杀一名士兵会使冲突中减少一个敌人， Wounding him removes three: 而伤一名士兵却会减少三个敌人： the victim and the two who have to carry him from the battlefield. 伤兵及运送伤兵撤离战场的两名士兵。 That cynical calculation lies behind the design of many weapons that are intended toincapacitate rather than annihilate. 许多武器在设计时就运用了这种乖张的算计思维，它们的目的不是消灭敌人而是使敌人丧失作战能力。 But robotics may change the equation. 不过，机器人技术或许能改变这种格局。 The Battlefield Extraction-Assist Robot, or BEAR for short, is, in the words of Gary Gilbert ofthe United States Army s Telemedicine and Advanced Technology Research Centre, | 
