现代鸟类是恐龙。
Modern birds have higher metabolism rates than even the most agile Velociraptor ever had.
现代鸟类拥有比最敏捷的的迅猛龙还要高的新陈代谢率。
Some ancient dinosaurs were indistinguishable from modern birds.
一些古代恐龙与现代鸟类是没有区别的。
Modern birds use their legs to launch and their wings to stay aloft.
现代的鸟类使用它们的腿起飞并且凭借它们的翅膀飞在空中。
The second picture shows one similar in shape to those sported by modern birds.
第二幅图显示的羽毛形状与现代鸟类羽毛相似。
When Huxley looked at ostriches and other modern birds, he saw smallish dinosaurs.
在审视了鸵鸟和其他现代鸟类以后，赫胥黎认为它们就是小型恐龙的后代。
Component structure of the outer covering and flight surfaces of all modern birds.
现代鸟类体表和翼面覆盖的结构。
Many researchers have long believed that gliders such as this were the ancestors of modern birds.
许多研究者一直相信像这样的滑翔者是现代鸟类的祖先。
Modern birds use a similar bone in flight, drawing their wings toward their bodies during an upstroke.
现代鸟类在飞行时也需要依赖这块腕骨，它们通过这块骨骼牵引翅膀以获得抬升力。
Endotherms are animals such as modern birds and mammals that keep their body temperatures constant.
恒温动物是指诸如现代鸟类和哺乳动物这种可以保持体温恒定的动物。
The skulls and pelvic bones of some species of dinosaur share characteristics with the skulls and pelvic bones of all modern birds.
一些恐龙的头盖骨和骨盆骨与所有现代鸟类的头盖骨和骨盆骨有许多相同特征。
And modern birds, unlike their Maniraptoran ancestors, have a big toe that juts away from the other toes, which allows birds to perch.
现代鸟类不同于它们的手盗龙祖先，它们拥有突出的大趾，可以栖于枝头。
Other than the fact that some modern birds fight with their wings, Longrich and Olson cite two broken arm bones which show signs of healing.
除了一些现代鸟类使用翅膀进行攻击的事实以外，Longrich和Olson还列举了两块被破坏的臂膀骨骼，表明其“治愈性进化”的事实。
Eventually, dense rows of interlocking barbs formed a flat surface: the basic blueprint of the so-called pennaceous feathers of modern birds.
最终，成行的浓密互连羽支形成了平滑表面：即现代鸟类的羽翮结构基本形成。
All animals whose skulls share the characteristics of those of modern birds also have pelvic bones that are similar to those of modern birds.
所有动物，如果它们的头盖骨和现代鸟类的头盖骨具有相同特征，那么它们的骨盆骨也一定和现代鸟类的骨盆骨具有相同特征。
Careful analysis revealed that the tail once belonged to a young coelurosaur, a dinosaur family that includes tyrannosaurs and modern birds.
细致的分析揭示了这块尾巴曾经属于一只年轻的虚骨龙，这一科恐龙包括霸王龙和现代鸟类。
Since the dinosaurs recovery plans since 1970, many studies have pointed out that modern birds most likely suborder Theropoda a direct descendant of dinosaurs.
自恐龙复原图从1970年以来，许多研究指出现代鸟类极可能是兽脚亚目恐龙的直系后代。
Modern birds are direct descendants of Maniraptoran dinosaurs, experts say. The creatures that went extinct millions of years ago are now called "non-avian dinosaurs."
恐龙研究专家认为，现代鸟类直接起源于手盗龙类，其他已灭绝的恐龙现在被称之为“非鸟恐龙”。
The findings could help to explain why the archosaurs — the ancestors of crocodilians, dinosaurs, and modern birds — emerged to dominate the world some 250 million years ago.
初龙是鳄鱼、恐龙类以及和现代鸟类的始祖。这次的发现有助于解释2.5亿年前初龙在世界范围内大规模存在的原因。
As Naish points out, though, the new findings about Samrukia demonstrate that modern birds "weren't as distinct from extinct groups of Mesozoic birds as people used to think."
Naish指出，关于Samrukia的新发现证明了现代鸟类与已灭绝的中生代鸟类种群的不同程度并非像人们曾认为的那样。
The bone structure of dinosaurs shows that, unlike modern reptiles, they grew as fast as birds and mammals — which dovetails with a growing body of evidence that dinos were, in fact, warm-blooded.
恐龙的骨骼结构表明它们不同于现代的爬行动物，它们的生长速度像鸟类和哺乳动物一样快这与越来越多证明恐龙是温血动物的证据相吻合。
In the meantime, other scientists sought to illuminate the origin of feathers by examining the scales of modern reptiles, the closest living relatives of birds. Both scales and feathers are flat.
就在同时，其他科学家们开始通过检验现代爬行动物的鳞片来试图阐明羽毛的起源，因为爬行动物与鸟类之间的亲缘关系最为接近。
New evidence appears to confirm that the ancient creatures were endothermic, or warm-blooded, like their modern descendants - birds.
最新证据证实，恐龙这种远古生物跟它的现代后裔鸟类一样，都是温血动物。
In these characteristics, dinosaur bones are similar to those both of mammals and of dinosaurs' modern descendants, the birds, and dissimilar to those of both ancient and modern crocodiles.
在这些方面，恐龙的骨骼同哺乳动物及恐龙的现代后裔——鸟类——的骨骼相似，而与古代或现代的鳄鱼骨骼都不相同。
In the meantime, other scientists sought to illuminate the origin of feathers by examining the scales of modern reptiles, the closest living relatives of birds.
就在同时，其他科学家们开始通过检验现代爬行动物的鳞片来试图阐明羽毛的起源，因为爬行动物与鸟类之间的亲缘关系最为接近。
Amid fears cuckoos are falling victim to an ever more unsettled climate and aggressive modern farming methods, the charity asked Britons to go on alert for the noisy birds.
由于担心它会成为日趋多变的气候以及掠夺式的现代耕作方法的牺牲品，该慈善团体要求英国人特别留意这种聒噪的鸟儿。
Between crocodiles and birds, using a modern term is concerned, it is a win-win.
鳄鱼和小鸟之间，用一个现代名词来讲，那就是双赢。
Earlier springs that confuse migratory birds, more efficient farming and the conversion of dilapidated buildings (good for nesting) into modern homes have all contributed to these woes.
造成这种灾患的原因包括迷惑候鸟的早春，更高效的耕种以及危房(适宜筑巢)向现代房屋的转变。
The modern calls carry more weight with the birds too.
现代鸟类的叫声显示它们承载着更多的压力。
The modern calls carry more weight with the birds too.
现代鸟类的叫声显示它们承载着更多的压力。
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