They are a group of viruses that cause diseases in mammals and birds.
它们是一组引起哺乳动物和鸟类疾病的病毒。
Some smaller mammals and birds, too, enjoy berries, not to mention people.
有些小型哺乳动物或鸟类亦喜食浆果，更别说人类了。
Burmese pythons are carnivores surviving primarily on small mammals and birds.
缅甸蟒是肉食动物，最喜欢的就是小型哺乳动物和鸟类。
And as most mammals and birds experience REM sleep, it's presumed that they do, too.
同时大部分的哺乳动物和鸟类都做过REM类型的梦，我们姑且推测它们都会做梦。
It can infect mammals and birds, but scientists know little about its effects on its victims.
它可以感染哺乳动物和禽类，但是科学家们对其影响受害者知之甚少。
Higher forms of animals, such as mammals and birds, can see, hear, smell, feel, and taste.
更高级形式的动物，比如哺乳动物和鸟类，能够看、听、嗅、触摸和品尝。
The Black Mambas feed on small mammals and birds, like voles, rats, squirrels, mice, rats, or bush babies.
黑曼巴以小的哺乳动物和鸟为食，像全胜，鼠，松鼠，老鼠，鼠或矮树丛宝贝。
Finally, mosquitoes come equipped with temperature sensors, so they can find warm-blooded mammals and birds very easily.
最后就是，蚊子还配备了温度感应器，所以牠们很轻易就能追踪到温血的哺乳动物和鸟类。
For centuries it has been recognized that mammals and birds differ from other animals in the way they regulate body temperature.
几个世纪以来，人们就认识到哺乳动物和鸟类调节体温的方式与其它动物不同。
Because most nocturnal mammals and birds are shy and skittish, Crane recommends starting with something easier: amphibians.
因为非常夜的哺乳动物和鸟是怕羞和紧张的，起重机建议从更容易的事情开始：两栖动物。
Most speculatively, it might even imply a degree of intelligence—for the most intelligent mammals and birds are generally those that live in groups.
最大胆的推断是，它甚至可能有一定程度的智力—因为最聪明的哺乳动物和鸟类一般都是群居性的。
The finding implies that their hosts, both mammals and birds, had also begun to flourish and speciate before the reign of the dinosaurs was over.
这项发现也隐隐地证明虱子的哺乳类和鸟类宿主在恐龙统治结束之前已经开始繁盛并进化出新物种。
The opposing view is that mammals and birds did not become successful and radiate into many different species until after the demise of the dinosaurs.
相对立的观点则认为哺乳类和鸟类在恐龙灭绝之后才成功并演化为各种不同的物种。
Snakes eat not only mammals and birds but also other reptiles, such as frogs and even other snakes, said Zug, who was not involved in the new study.
祖格，其并未参与这项最新研究，说：蛇不仅吃哺乳动物和鸟，也吃其他爬行动物，像青蛙甚至其他蛇。
Unlike mammals and birds, reptiles are unable to experience slow wave sleep, the type of sleep believed to be responsible for boosting memories, especially those connected to performing new tasks.
跟哺乳动物和鸟类不同，爬行动物没有慢波睡眠，此种睡眠据信能增强记忆，尤其是增强那种与新任务相关的记忆。
Humans along with other mammals and birds then inhale the oxygen and exhale carbon dioxide in the physical creating a symbiotic relationship where one supports the other in the continued existence.
然后人类与其它哺乳动物和鸟类在物质形体吸入氧气而呼出二氧化碳，在维持生存中创造了一个彼此支持的共生关系。
Pythons mainly feed on birds and small mammals.
蟒主要吃鸟和小的哺乳动物。
Hatchlings are really vulnerable, especially to birds and small mammals when they are born.
刚出生的幼体真的很脆弱，尤其是刚出生的鸟类和小型哺乳动物。
Long before Man lived on the Earth, there were fishes, reptiles, birds, insects, and some mammals.
在人类出现很早以前，地球上就出现了鱼类、爬虫类、鸟类和一些哺乳动物。
Birds shelter in nests, rock overhangs, trees, and dense shrubs to avoid the hottest hours of the day, while mammals like the kangaroo rat burrow underground.
鸟类在巢穴、岩石悬垂处、树丛以及茂密的灌木丛中寻找庇护，以躲避一天中最热的时候；而像更格卢鼠这样的哺乳动物则选择藏身于地下的洞穴中。
Like birds and mammals that eat the fish and insects, and you get trees and plants that begin to grow near the standing water that can't grow near the running water.
就像鸟类和哺乳动物吃鱼和昆虫，你可以看到树木和植物开始在静水附近生长，而不能生长在流动的水附近。
Play appears to be a developmental characteristic of animals with fairly sophisticated nervous systems, mainly birds and mammals.
玩耍似乎是具有相当复杂的神经系统的动物（主要是鸟类和哺乳动物）的一种发育特征。
From a psychological point then, animals have evolved to be nice to their kin, particularly their children, and particularly in birds and mammals.
从心理学角度看，动物进化趋向于对自己的亲人有益，特别是自己的孩子，以鸟类和哺乳类为代表。
From a psychological point then, animals have evolved to be nice to their kin, particularly their children, and particularly in birds and mammals.
从心理学角度看，动物进化趋向于对自己的亲人有益，特别是自己的孩子，以鸟类和哺乳类为代表。
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