Nobody knows for sure; they might have been useful for keeping dinos dry, distracting predators or attracting mates, as peacocks do today.
没有人能够给出确切的答案，它们也许可以帮助恐龙保持干燥，转移掠食者的注意力或者吸引配偶，就像今天的孔雀一样。A few big predators have memorably beaten the odds, at least for a while.
值得一提的是，极少数大型掠食动物至少暂时打破了这一宿命。A dainty eater, he found that his mates, finishing first, robbed him of his unfinished ration. There was no defending it.
它发现那些早用完餐的同伴总会过来掠食自己的那一份。Perhaps the real reason why they did not plant their footprints on the dinosaur freeway is that they might have ended up as prey, as well.
它们为何没有在恐龙公路上留下足迹呢？真正的原因或许是它们同样亡于其它掠食者。Created during the heart of the Civil Rights Movement, this collage depicts a bustling city neighborhood with a serene bird at its center.
民权运动高峰时期的拼贴作品，安祥的鸽子、掠食的猫，拼凑出城市的繁忙与喧嚣。Armed predators have been used in Libya "purely as [intelligence, surveillance and reconnaissance systems] until today, " Cartwright said.
卡特莱特说，到今天为止，武装“掠食者”战机已经在利比亚出动，只作为情报、侦察和监测系统使用。Movement is usually into surface waters at night to feed and into deeper waters to avoid predators during the day.
迁移通常是在晚上进入水表层觅食而在白天进入较深的水域避开掠食者。Each night the male Oreophryne embraces the egg mass, possibly to keep it moist or to protect it from small predators like insects.
每个夜晚，男性oreophryne包含卵块，尽可能保持它在潮湿或保护它防止小型的掠食者，像昆虫。The the wild boar (Sus scrofa) is often found marauding in the swamp margin and it is a source of bushmeat in Asia.
野猪（Susscrofa）经常被发现在沼泽边掠食，它们本身是亚洲丛林的兽肉来源。