She added that this kind of growth has long been considered special to warm-blooded animals like mammals and birds.

她补充，以来，种生一直被认为是哺乳和鸟类等恒所特有的。

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

并不是恒的体也没有变化。

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

最后，恐龙是变还是恒的答案比看起来要复杂得多。

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

此外，阅读文章指出恐龙的腿在身体下方，是恒的特征。

And so if you're an endotherm, warm-blooded critter like we are, once your body temperature starts to drop off, then you can quickly die.

因此， 如果你是像我们样的恒，一旦体开始下降，就可能迅速面临死亡。