Compared to other endotherms, I'm pretty cool.

跟其他内动物比起来，我挺“冷”的。

Is this turtle an ectotherm, or an endotherm?

只乌龟是变动物还是恒动物？

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

他们认为些论点不能证明恐是恒动物。以极地恐论为例。

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

因此，极地地区存在恐不能证明恐是恒动物。

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

不一定意味着恐是为奔跑而生的高能恒动物。

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动物，就像现代鸟类一样。

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

例如，恐爪没有骨环，可能更像是恒动物。

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

通常，快速生长、活跃的吸热动物有一种叫做纤维板层骨的骨组织。

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

最后，恐是变动物还是恒动物的答案比看起来要复杂得多。

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

不是说恒动物的体也没有变。

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

是一种适应，可以帮助我们和其他吸热动物在呼吸过程中保留更多的热量和水。

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暖。

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

种度调节的差异意味着吸热动物可以生活在更多变的环境中，且通常比外动物更活跃。

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

不过，讲座指出，类似的腿部姿势不一定意味着恐是恒动物。

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，通过提供三个强有力的理由论证恐不是恒动物。

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，是恒动物的特征。

In the first place, the author asserts that dinosaur fossils have been found in Polar Regions, where only endotherms could be active.

首先，作者断言在极地地区发现了恐，那里只有吸热动物可能活跃。

It turns out that this turtle is more endotherm like than ectotherm like, and is able to maintain a relatively stable internal body temperature.

事实证明，只乌龟更像是恒动物，而不是外恒动物，能够保持相对稳定的体内度。

In contrast, the speaker believes that the Polar Regions were warm enough during part of the year for animals that were not endotherms to live.

相比之下，演讲者认为极地地区在一年中的部时间足够暖， 可以让非恒动物生存。

Thanks to extensive studies on modern animals, we know that these bone cells or Osteons, are laid down in distinctive and different ways by endotherms and ectotherms.

由于对现代动物的广泛研究，我们知道些骨细胞或骨细胞是由吸热动物和变动物以独特和不同的方式产生的。