The mania for dinosaurs began in the late 1800s.
恐龙热兴起于19世纪晚期。
Eighty million years ago, dinosaurs ruled the earth.
八千万年前，地球是恐龙的天下。
Birds are widely believed to have evolved from dinosaurs.
鸟类普遍被认为是从恐龙进化而来的。
There are no dinosaurs alive today, but models of dinosaurs can be seen in the museum.
当今已经没有恐龙生存了，但是我们可以在博物馆看到恐龙模型。
Biologists generally agree that birds and dinosaurs are somehow related to one another.
生物学家普遍认为鸟类和恐龙在某种程度上是有联系的。
Scientists studying the physiology of dinosaurs have long debated whether dinosaurs were warm- or cold-blooded.
长期以来，研究恐龙生理学的科学家们一直在争论恐龙到底是温血动物还是冷血动物。
Some scientists hypothesize that the extinction of the dinosaurs resulted from the effects of an asteroid collision with Earth.
一些科学家假定，小行星撞击地球导致了恐龙的灭绝。
For instance, if it hadn't been for the extinction of the dinosaurs, we mammals would never have had an opportunity to flourish.
例如，如果没有恐龙的灭绝，我们这些哺乳动物就不会有机会繁荣昌盛。
Although many lines of evidence indicate that birds evolved from ground-dwelling theropod dinosaurs, some scientists remain unconvinced.
尽管有许多证据表明鸟类是从陆生兽脚亚目恐龙进化而来的，但一些科学家仍然表示怀疑。
Early therapods, the group of dinosaurs that includes all meat-eating species from Velociraptor to Tyrannosaurus rex, gained ground and thrived.
早期的兽脚亚目食肉恐龙，包括从迅猛龙到霸王龙在内的所有肉食物种，抢占了地盘并茁壮成长。
Researchers now believe, because of this study, that the male parenting behavior of these birds might have its origins in the behavior of dinosaurs.
由于这项研究，研究人员现在坚信，这些鸟类的雄性养育行为可能起源于恐龙的行为。
Raptors look quite a bit like dinosaurs but they have much more in common with birds than they do with other theropod dinosaurs such as Tyrannosaurus.
迅猛龙看起来有点像恐龙，但是它们与其他兽脚类恐龙比如暴龙相比，与鸟类更相似。
Unearthed in China, fossils of feathered dinosaurs offer the most dramatic evidence yet discovered of the close evolutionary relationship between dinosaurs and birds.
在中国出土的有羽毛的恐龙化石为恐龙和鸟类之间的密切进化关系提供了迄今为止最引人注目的证据。
In the time when the dinosaurs dominated the daytime economy, our mammalian ancestors probably only managed to survive at all because they found ways of scraping a living at night.
在恐龙主宰着白天的局势的时代，我们的哺乳动物祖先之所以能够勉强生存下来，可能只是因为他们找到了在夜间谋生的方法。
Fossil bones of the huge herbivorous dinosaurs known as sauropods were first discovered and studied between 1840 and 1880, providing evidence for the gargantuan dimensions of the adults.
1840年至1880年间首次发现并研究了这种被称为蜥脚类动物的巨型食草恐龙的骨骼化石，为成年型恐龙的巨大特征提供了证据。
Guessing the diet of dinosaurs is not always easy.
猜测恐龙的食谱并非易事。
When dinosaurs disappeared about 65 million years ago, mammals thrived.
当恐龙在六千五百万年前消失后，哺乳类便兴盛起来。
If he likes dinosaurs, find books and movies about them, or visit a museum.
如果他喜欢恐龙，就帮他买相关的书和电影，或者带他去博物馆。
Chickens, and other birds, are descendants of dinosaurs and carry the dino DNA.
小鸡以及其他禽类是恐龙的后代，有着恐龙的基因。
The cypress trunks themselves brought to mind the sturdy legs of large dinosaurs.
柏树的巨大树干使我联想到大型恐龙粗壮的大腿。
A dozen dinosaurs with filaments or feathers have since been discovered at that site.
自此以后，研究者们在同一处遗址上发现了十几种带有细丝或羽毛结构的恐龙化石。
Our hero leaps in, with the help of a pack of dinosaurs summoned by Mother Earth.
在大地母亲所召唤出的一群恐龙的帮助下，我们的英雄冲了进去。
Some dinosaurs engaged in distinctly birdlike behaviors, such as nesting and brooding.
某些恐龙明显表现出鸟类的行为，例如筑巢和孵卵。
The fact that they were able to change their world view about these dinosaurs was really great.
他们能勇于改变自己对恐龙的看法是非常了不起的。
THAT birds are the descendants of dinosaurs is now accepted by almost all evolutionary biologists.
目前，认为鸟是恐龙的后裔的说法已经被几乎所有的进化生物学家所接受。
Dr. Prum, an expert on the structure of feathers, told EarthSky that feathers originated in dinosaurs.
普鲁姆博士是研究羽毛结构的专家，他告诉EarthSky，羽毛起源于恐龙。
So, if a meteor helped to wipe out the dinosaurs, does this mean we should be terrified of the skies today?
那么，既然可能是陨星造成了恐龙的灭绝，今天的我们是否应该对天空心存惧意？
So, if a meteor helped to wipe out the dinosaurs, does this mean we should be terrified of the skies today?
那么，既然可能是陨星造成了恐龙的灭绝，今天的我们是否应该对天空心存惧意？
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