The human brain evolved to attribute a living cause to every phenomenon - if the rustling of a bush in the forest wasn't a predator, then it was probably an evil spirit.

如果森林中灌木的瑟瑟声，不是因为捕食者，那么可能就是一个邪恶的幽灵在作祟。

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Robotic unmanned predator drones, for example, which can seek out and kill human targets, have already moved out of the movie theatres and into the theatre of war in Afghanistan and Iraq.

机器人无人驾驶捕食者无人机，例如，它可以找出并杀死人的目标，已经搬出了电影院和进入战场，在阿富汗和伊拉克。

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In Greater Yellowstone, for example, Predator Project found that more than two-thirds (22 out of 30) of the human-caused mortalities of the Yellowstone wolves have occurred outside of the national park, even though the wolves have spent the majority of their lives within the park's borders.

CNN: Northern Rockies wolf report released