Compared to other endotherms, I'm pretty cool.

跟其他内温动物比起来，我挺“冷”的。

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

他们认为这些论点并不能证明恐龙是恒温动物。以极地恐龙论为例。

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

因此，极地地区存在恐龙化石并不能证明恐龙是恒温动物。

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

这并不一定意味着恐龙是为奔跑而生的高能恒温动物。

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

例如，恐爪龙没有骨环，可能更像是恒温动物。

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

这并不是说恒温动物的体温也没有变化。

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

在此过程中的某个地方，恐龙似乎变成了完全恒温动物，就像现代鸟类一样。

Is this turtle an ectotherm, or an endotherm?

这只乌龟是变温动物还是恒温动物？

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物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、活跃的吸热动物有一种叫做纤维板层骨的骨组织。