At night the animals come out, and so do human predators, like the proverbial thief in the night.
夜里出来，动物和人类的捕食者，就像格言中所说的小偷在夜间。
As the human study suggests, another reason for dolphins keeping their eyes open during sleep is that they can look out for predators while asleep.
正如人类研究表明的那样，海豚在睡觉时睁着眼睛的另一个原因是，它们可以在睡觉时留意捕食者。
"Human beings were small, defenseless and vulnerable to predators," says Barbara J. King, biological anthropologist at the College of William and Mary and author of Evolving God.
“人类对掠食者而言是弱小、无力防御与易受伤害的，”威廉学院生物人类学家、《进化之神》的作者芭芭拉。J .金说。
The human ability to control fire would have brought a semblance of day to night, helping our ancestors to see in an otherwise dark world and keep nocturnal predators at bay.
人类控制火种的能力，黑夜看上去和就白天差不多了，这有助于人类祖先在黑暗世界里也能看到并且捕获夜间食肉动物。
Soon afterwards, America's robot Predators and human manhunters were dispatched on another assignment, to Iraq.
不久之后，美国的“掠食者”侦察机和地面搜查人员又被调往伊拉克执行任务。
Though human access to crane habitat in Wood Buffalo is restricted, predators like birds, wolves, and bears can rob the flock.
尽管人们要进入到伍德布法罗保护区的美洲鹤栖息地是受到限制的，可是食肉动物像鸟类、狼和熊能够掠夺那里的美洲鹤郡落。
But did she walk upright most of the time like a modern human or still spend plenty of time in the trees evading predators?
但Lucy是和现代人一样在大部分的时间里直立行走，还是在大部分时间里呆在树上以躲避捕食者呢？
Bred for centuries to deal with predators without human intervention, the Great Pyrenees has strong instincts and will act upon them, sometimes even to the chagrin of its owner.
因为经过几个世纪在无人为干预的情况与天敌斗争，大白熊也拥有了强烈的直觉和判断，以及自主的性格，这点让饲养者也十分懊恼。
But the problem is, resource-rich planet, Pandora is not suitable for human life, where the air for human lethal, Native plants and animals are ferocious predators, extremely dangerous.
但是问题是，资源丰富的潘多拉星球并不适合人类生活，这里的空气对人类致命，本土的动植物都是凶猛的掠食者，极度危险。
But the problem is, resource-rich planet, Pandora is not suitable for human life, where the air for human lethal, Native plants and animals are ferocious predators, extremely dangerous.
但是问题是，资源丰富的潘多拉星球并不适合人类生活，这里的空气对人类致命，本土的动植物都是凶猛的掠食者，极度危险。
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