下丘脑视前区和下丘脑前区为恒温动物的体温调节中枢。
It is well know that the preoptic and anterior hypothalamus is the heat regulating center of homeotherm.
恒温动物的生理结构允许它们进行持续的物理运动，比如奔跑。
The physiology of endothermy allows sustained physical activity, such as running.
所有现代恒温动物的腿都是长在身体下部的，而恐龙的腿也具有同样的特点。
The legs of all modern endotherms are underneath the body, and so were the legs of dinosaurs.
这种哈弗森管可以保护神经和血管以保障动物快速地生长，而快速生长恰恰是恒温动物的一个特征。
These canals house nerves and blood vessels that allow the living animal to grow quickly; and rapid body growth is in fact a characteristic of endothermy.
这些变化可能反映了异温动物（冬眠动物）的LDH同工酶基因的表达有不同于恒温动物的某些特点。
These changes might reflect some different characteristics in expression of LDH isozyme genes between heterothermals (hibernating animals) and homothermals.
是“所有现代恒温动物的腿都是长在身体下部的，而恐龙的腿也具有同样的特点”吗？不是的，腿长在身体下部是恒温动物的“必要不充分条件”。
When dinosaurs lived, even the Polar Regions, where dinosaur fossils have been found, were much warmer than today, warm enough during part of the year for animals that were not endotherms to live.
恒温动物，如人类和犬只，通过消耗大部分的能量产生热量来保持身体的温暖。
Warm-blooded animals, like humans and dogs, spend much of their energy generating heat to keep the body warm.
成为一种恒温动物，有很明显的好处，比如我们不必一大早就坐在太阳底下先晒上几小时，然后才能活动身体。
There are obvious benefits to being warm blooded. Like not having to sit in the sun for a few hours just to get going in the morning.
恒温动物也通过选择有利的环境来调节其体温。
Endotherms also regulate their temperature by choosing favorable environments.
真正的恒温动物可以一年四季保持恒定的体温，因此可以在天气很冷的情况下快速生长。
Animals that maintain a constant body temperature year-round as true endotherms do grow rapidly even when the environment becomes cool.
很多科学家对你们刚刚听到的文章持有不同意见。他不认为这些理由不能支持恐龙是恒温动物。
Many scientists have problems with the arguments you read in the passage. They don't think those arguments prove that dinosaurs were endotherms.
这种准人类中心的观点，即人类祖先必然崛起的观点发生了动摇，最近的考察显示恐龙也很灵巧并且是恒温动物。
This quasi-anthropocentric view, of the inevitable rise of humanity's ancestors, took a knock when closer examination showed that dinosaurs, too, were often nimble and warm-blooded.
恒温动物和骨结构之间也有相应的关联。
There is also a connection between endothermy and bone structure.
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。
Endotherms are animals such as modern birds and mammals that keep their body temperatures constant.
恒温动物和腿的位置及运动方式有一定联系。
There is a connection between endothermy and the position and movement of the legs.
哈弗森管恒温动物和骨结构之间也有相应的关联。
There is also a connection between endothermy and bone structure.
因为恐龙属于爬行动物，而现代的爬行动物都不属于恒温动物，所以长期以来恐龙都被当做是变温动物。
Because dinosaurs were reptiles, and modern reptiles are not endotherms, it was long assumed that dinosaurs were not endotherms.
“冷血”是外行的人对变温动物的叫法，它们的体温是随着周围的环境而变化，而不是像恒温动物那样内部自行调节体温的稳定。
"Cold-blooded" is the layman's term for ectotherms—animals whose body temperature is contingent on the surrounding environment, rather than internally regulated like that of warm-blooded creatures.
“冷血”是外行的人对变温动物的叫法，它们的体温是随着周围的环境而变化，而不是像恒温动物那样内部自行调节体温的稳定。
"Cold-blooded" is the layman's term for ectotherms—animals whose body temperature is contingent on the surrounding environment, rather than internally regulated like that of warm-blooded creatures.
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