His mother senses a nearby predator. But it's not the dingo. Her attention is fixed on the wedge- tailed eagle flying above.
它的妈妈感觉到附近有捕食者。但不是野狗。它的注意力集中在头顶盘旋的楔尾鹰。He is now making a robot predator to see how the shoal reacts to less benign intruders.
现在，博士正在做一个机器捕食者，看看鱼群对这些凶恶入侵者将会会做出如何反映。Evolution did not narrowly require that insects fly or swim, only that they somehow move quick enough to escape predators or catch prey.
若非为了逃避捕食者或捕获猎物而需要它们设法跑得足够快，进化不会强求昆虫飞行或游泳。A recent announcement by the Pentagon that it was throwing two armed Predator drones into the fray may also have had a psychological impact.
五角大楼近期宣布，正投入两架武装雄蜂“捕食者”战斗机到这场争端之中，这也许已对反叛分子带来了心理冲击。And I've done calculations that show that this could be see from as much as 300 feet away by a predator.
我曾经计算过，300英尺以外的捕食者也能看到这些光。These intelligent, versatile predators can swim up to a mile in the ocean and can roam 40 miles at a time.
这些多才多艺的聪明捕食者能在海里游动长达一英里（约1.6公里），而且能一口气漫步40英里。Allosaurus was a powerful predator that walked on two powerful legs, had a strong tail. The Allosaurus hunted in groups.
异特龙是个凶猛的捕食者，它有着强劲的后腿和健壮的尾巴，捕猎时是成群出击。The population of final predator is often too large.
最终捕食者的族群经常都太大。Birds' mating is often a quick business as it can leave them open to attack from predators.
鸟类交配是件快速的事情，因为这会使它们处于易受捕食者攻击的境地。