查询词典 predators

Then a couple of doves flew off of the ground, and the grosbeaks flew. All of the other birds stayed. I started looking on the ground for predators, and just then, a Cooper's Hawk came diving out of a tree.

此时几只斑鸠飞了起来，腊嘴鸟也飞了起来，其他的则原地不动了，我正看是否来了不速之客时，突然一只库珀隼从树丛中冲出，直扑向斑鸠。

This zone shows the fragile relationship between predators and prey. Large predatory sharks, rays and giant groupers live alongside schools of fish and bottom-dwelling animals.

这个区域呈现掠夺者和被捕食者间的脆弱关系，有巨大掠夺者鲨鱼、魟鱼、与鱼群共居的大石斑鱼和海底动物。

Maybe critters dressed as twigs also "blend in" so that predators just don't see them. To find out, scientists presented some twiggy-looking caterpillars to two sets of hand-reared chicks. They found that baby birds that had never seen sticks before gobbled those bad boys right up. But chicks who were shown real twigs first took much longer to peck at the mimics, and did so more gingerly than their na ve friends.

为了验证这种想法，科学家们把一些粪便一样的毛毛虫放到2组人工饲养的小鸡中，他们发现那些从未见过树枝的幼鸟能够找出这些毛毛虫，而那些见过真正树枝的花费了更长的时间找到这些毛毛虫，而且比它们那些没见过世面的朋友更加小心。

With luck—three out of four nests are destroyed by predators—hatchlings will emerge 75-90 days later.

如果运气好的话－－四分之三的巢将被食肉动物毁掉－－75到90天后这些蛋就会孵化了。

In many communities insects play a key role as herbivores and predators.

在许多群落中，昆虫作为植食动物和捕食者起着重要的作用。

In addition to a meat, a pasture and predators and herbivores there any difference?

除了一个吃肉，一个吃草，食肉动物和食草动物还有什么区别？

For the most predatory or parasitic, are important pollinators and predators, only a small number of herbivores.

大多数为捕食性或寄生性，是重要的天敌和传粉昆虫，只有少数为植食性。

They have no natural predators and remain herbivores.

但科学家们指出，它们是世界上唯一的海生蜥蜴，没有天敌，依旧是食草动物。

Plant volatiles can serve as attractants for specific pollinators, important cellular regulators in developmental processes and protection against environmental stress, whereas those released after herbivory or pathogen attacks can induce the expression a set of defensive genes or attraction of predators of the herbivores.

由於潜在的应用价值，近几年该领域颇受注目，特别是应用基因工程技术设计植物释放特殊气味物质，诸如特定的驱避剂或者其它控制植物或昆虫行为的特殊气味乃至与人类健康相关的药用气味物质。

Since the predators in their new homelands are not adapted to exploit them they are able to reproduce unchecked.

因为在新的属地，原有的天敌掠食他们的能力还没有建立，所以这些物种可以毫无节制地繁殖再生。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。