Two opposing scenarios, the "arboreal" hypothesis and the "cursorial" hypothesis, have traditionally been put forward concerning the origins of bird flight.
关于鸟类飞行的起源，传统上提出了两种对立的假设：“地栖说”和“树栖说”。
Airplanes do something clumsy, useful and only slightly similar to bird flight.
飞机可以笨拙飞行，很有用，但和鸟类飞行相似仅有一点点。
Computation resembles human thought only to about the degree that jet propulsion resembles bird flight.
计算和人类思维的相似程度仅仅达到了喷气推进和鸟类飞行之间相似的程度。
In the 1880s, Marey turned his attention to the tricky analysis of bird flight, photographing sequences of herons and cockatoos.
时间转到19世纪80年代，马雷也把注意力转移到分析棘手的鸟类飞行姿态上。他拍摄了苍鹭和鹦鹉的飞行序列照片。
In a quiet field, Dr. Dial, 57, with a shaved head and goatee, stands out with his evangelical zeal about understanding bird flight.
在一块安静的场地里，57岁剃着光头留有山羊胡的戴尔博士非常显眼，正如新教徒般狂热地研究着鸟类的飞行。
It now looks like bird flight was made possible by a whole string of such exaptations stretching across millions of years, long before flight itself arose.
现在看起来，似乎是在上千万年的时间跨度中，将类似的功能变异整个串联起来才使得鸟类获得了飞行的能力。
An arctic tern, on its 20,000 km flight from the extreme south of South America to the Arctic circle, will take no notice of a nice smelly herring offered from a bird-watcher's boat along the way.
北极燕鸥在从南美洲的最南端飞往北极圈的路线全长2万公里，但燕鸥这一路上都不会留意观鸟船送来的散发臭味却又可口的鲱鱼。
MISSOULA, Mont. - the flying abilities of even the most prosaic bird put airplane maneuvers to shame, and experts here at the University of Montana Flight Laboratory are cognizant of that every day.
蒙大拿州，密苏拉—蒙大拿大学飞行实验室的专家们每天都会认识到即使是最普通的鸟类的飞行能力也能使飞行特技相形见绌。
Work at the Montana lab, Dr. Prum said, has led people to realize how complex flight is and how many different things are happening when a bird flies.
普鲁姆博士说在蒙大拿实验室的研究使人们意识到在鸟儿飞行时的飞行动作有多么的复杂和同时有多少不同的事情在发生。
As the young bird matures, such controlled descent gradually gives way to powered flight.
一旦幼鸟成熟，类似这样的可控降落就会演变成为动力飞行。
Photos taken from the bird in flight could be captured within hundreds of feet of the target, producing much more detailed pictures than other image-capturing methods.
飞行中的鸽子利用这种设备可以拍摄到数百米以内的目标图像，用它拍出的照片在细节上要远胜于其他的拍照方式。
MISSOULA, Mont. - the flying abilities of even the most prosaic bird put airplane maneuvers to shame, and experts here at the University of Montana Flight Laboratory are cognizant of that every day.
米苏拉，蒙大拿——即便是最普通鸟类的飞行能力也会让飞机相形见绌，这是蒙大拿大学飞行实验室(Universityof Montana FlightLaboratory)的专家们每天都要重复面对的事实。
I want to roam about and see all the wide world, yet I also yearn for a little sheltered nook; like a bird with its tiny nest for a dwelling, and the vast sky for flight.
我想到处漫游，饱览这个广大的世界，然而，我也渴望一个小小的隐蔽处所；像一只飞鸟，拥有一个微小的巢穴栖息，也想翱翔于浩瀚的天空。
This room is full of birds.Birds in simulated flight, birds perched eternally on branches, birdheads, bird skins.
这间房间都是鸟，有飞的姿态的，有永远停在树枝上的，有鸟的头，鸟的毛皮。
That flight, of course, came last Jan. 15, when his AirbusA320 suffered a bird strike en route from New York to Charlotte, N.C., and lost both engines.
这次飞行当然就是今年1月15日，萨伦·伯格驾驶的空客A320飞机从纽约飞往北卡罗来纳州夏洛特的途中遭遇了飞鸟袭击，两部引擎均出故障。
That flight, of course, came last Jan. 15, when his Airbus A320 suffered a bird strike en route from New York to Charlotte, N.C., and lost both engines.
这次飞行当然就是今年1月15日，萨伦·伯格驾驶的空客A320飞机从纽约飞往北卡罗来纳州夏洛特的途中遭遇了飞鸟袭击，两部引擎均出故障。
The photos show the hungry predator chasing the fleeing pink birds on a lake and plucking one unlucky bird straight from the air as it desperately tries to take flight.
画面显示，一只饥饿的土狼在湖面上奋力追逐一群粉红色的火烈鸟，将一只试图飞起来的火烈鸟从空中拽下。
And there the moon-bird rests from his flight.
那里月亮鸟为了休息飞来。
Prof Roger Wotton found that flight would be impossible for angels portrayed with arms and bird-like feathered wings.
RogerWotton教授发现，被描绘成拥有手臂和羽毛翅膀的天使其实是飞不起来的。
Success is to create the conditions when needed, just as that kind of bird flies across the Pacific Ocean with a simple twig to base itself on for survival and flight.
成功会创造需要的条件，正当那类鸟飞翔过太平洋和简单的嫩枝到把它自己基于为幸存和飞行。
The central meaning Shared by these verbs is. To move quickly, lightly, and irregularly like a bird in flight.
该词的中心意思是。如鸟飞行一般快速、轻巧或不规则地移动。
The application of this system not only extends the anti-bird scope, but also enhances the aeromodelling flight safety.
该系统的使用，大大增加了航模的驱鸟范围，同时也提高了航模的飞行安全性。
Bird strike represents one of the serious flight accidents. It is paroxysmal and universal, usually resulting in a huge economic and life lost.
鸟撞是飞机在飞行中遇到的重要危害之一，同时也是一种突发性和多发性的飞行事故，造成了重大的经济损失和人员伤亡。
Succeess is to creat the conditions when needed, just as that kind of bird flies across the Pacific Ocean with a simple twig to base itself on for survival and flight.
成功在于自己创造所需要的条件，就像那只鸟一样，仅用一根简单的小树枝飞越太平洋，主要靠的是它自己生存与飞翔。
Depending on the special wing membrane structure, wing outfit flight can make human being flying freely in the sky with bird-like wings.
翼装飞行能够实现，主要得益于翼装特有的翼膜构造，就像给人插上鸟一样的翅膀，可以在空中飞翔。
Depending on the special wing membrane structure, wing outfit flight can make human being flying freely in the sky with bird-like wings.
翼装飞行能够实现，主要得益于翼装特有的翼膜构造，就像给人插上鸟一样的翅膀，可以在空中飞翔。
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