A titanic snake has been identified as the top predator to walk, or at least slither, the land when the dinosaurs disappeared.
一条巨蟒，被认为是恐龙消失时在陆地上行走或至少滑行的顶级捕食者。
Paradoxically, the intrusion of another top predator could in someways make life easier for the white bears, says Rockwell.
但洛克韦尔也表示，颇有些自相矛盾的是，另一种大型捕食动物的入侵却让北极熊的生存更为容易了。
We now know that its long legs made it a top predator, a mammal that could run down its prey at long distances, particularly, bison.
我们现在知道它的长腿使之成为顶级掠食者，这种哺乳动物能够长距离追逐猎物，特别是野牛。
In chapter 3, in this paper, we investigated a three trophic level food chain system with periodic constant impulsive perturbations for top predator.
第三章将在对顶级捕食者进行脉冲干扰，即周期性的向食物链中投放定量的顶级捕食者的前提下，研究三种群食物链系统的稳定性。
A titanic snake that snacked on crocodiles and was longer than a London bus has been identified as the top predator to walk, or at least slither, the land when the dinosaurs disappeared.
一种比伦敦公共汽车还要长，可以把鄂鱼当点心吃的巨大无比的蛇已经被确认为恐龙消失后的顶级肉食动物，他们在陆地行走，或者至少是滑行在陆地上。
But B. sealeyi is a completely new species, found nowhere else-proving that the Southwest had its own top predator stalking the tropical forests and rivers of the late Cretaceous period.
但是B .sealeyi完全是一个新物种，在别处没有类似的——这也证明了，在西南部地区也有特定的位于食物链最高层的食肉动物，他们潜伏在白垩纪的热带森林和河流附近。
But a paper in Biology Letters suggests that even a relatively small protected area can have a positive impact on a top predator - in this case, the African penguin, an endangered species.
但生物学通讯一篇论文提出，哪怕一个相对较小的保护区也可对顶端捕食者产生积极作用，在此指的是濒临灭绝的非洲企鹅。
Scientists hope they can turn things around for this important apex predator, meaning one that is on top of the food chain.
科学家们希望他们为这种重要的顶级捕食者——处于食物链顶端的捕食者扭转局面。
Fly larvae are the top-level predator in the pitcher, the analogues of terrestrial tigers or wolves.
在猪笼草中，蝇幼虫是最高层次的捕食者，类似于陆地的老虎和狼。
Many experiments are unethical: you can't take a lion from its home simply to study the effects of top-predator removal.
有些实验不道德：你不能从窝里把狮子抓来，却只为了研究顶级食肉动物移居的影响。
Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago and thrived as a top land predator until the dinosaurs went extinct 20 million years later.
霸王龙出现，在白垩纪时期约85万年前，和蓬勃发展作为最高的土地捕食，直到恐龙灭绝二千万年后。
Tyrannosaurus rex arose during the Cretaceous period about 85 million years ago and thrived as a top land predator until the dinosaurs went extinct 20 million years later.
霸王龙出现，在白垩纪时期约85万年前，和蓬勃发展作为最高的土地捕食，直到恐龙灭绝二千万年后。
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