Compared to other endotherms, I'm pretty cool.

跟其他内温动比起来，我挺“冷”的。

They don't think those arguments prove that dinosaurs were endotherms. Take the polar dinosaur argument.

他们认这些点并不能证明恐是恒温动。以极地恐例。

So the presence of dinosaur fossils in polar regions doesn't prove the dinosaurs were endotherms.

因此，极地地区存在恐化石并不能证明恐是恒温动。

But the mouse is going to be an endotherm.

但是，这只老鼠将成恒温动。

Deinonychus, for example, has no bone rings, and was probably more like an endotherm.

例如，恐爪没有骨环，可能更像是恒温动。

Is this turtle an ectotherm, or an endotherm?

这只乌龟是变温动还是恒温动？

That doesn't necessarily mean dinosaurs were high-energy endotherms built for running.

这并不一定意味着恐是奔跑而生的高能恒温动。

They can also be called endotherms.

它们也可以被称恒温动。

Remember that endotherms are warm-blooded animals.

记住，恒温动是温血动。

For example, mammals and birds are endotherms.

例如，哺乳动和鸟类都是恒温动。

Somewhere along the way, it seems that dinosaurs became full endotherms, like modern birds.

在此过程中的某个地方，恐似乎变成了完全恒温动，就像现代鸟类一样。

Endotherms can make enough heat that they often don't need to rely on their environment to stay warm.

吸热可以产生足够的热量，以至于它们通常不需要依靠环境来保持温暖。

In the end the answer whether dinosaurs were ectotherms or endotherms is much more complicated than it seems.

最后，恐是变温动还是恒温动的答案比看起来要复杂得多。

It's an adaptation that helps us, and other endotherms, retain more heat and water during respiration.

这是一种适应，可以帮助我们和其他吸热动在呼吸过程中保留更多的热量和水分。

Typically, fast-growing, active endotherms have a type of bone tissue called fibrolamellar bone.

通常，快速生长、活跃的吸热动有一种叫做纤维板层骨的骨组织。

This isn't to say that Endotherms don't also have some variability in their body temperature.

这并不是说恒温动的体温也没有变化。

However, the lecture points out that similar leg position does not necessarily mean that the dinosaur was endotherm.

不过，讲座指出，类似的腿部姿势并不一定意味着恐是恒温动。

This difference in temperature-regulation means that endotherms can live in more variable environments and are usually more active than ectotherms.

这种温度调节的差异意味着吸热动可以生活在更多变的环境中，并且通常比外温动更活跃。

Besides, the reading passage states that dinosaurs had legs that were underneath the body, which is the feature of endotherms.

此外，阅读文章指出恐的腿在身体下方，这是恒温动的特征。

The lecture opposes the viewpoint stated in the reading passage and argues that dinosaurs were not endotherms by providing three strong reasons.

讲座反对阅读文章中陈述的观点，并通过提供三个强有力的理由证恐不是恒温动。