If true, though, why did cold-blooded animals such as snakes, lizards, turtles, and crocodiles survive the freezing winters and torrid summers?
如果这是真的，那么为什么像蛇、蜥蜴、乌龟和鳄鱼这样的冷血动物能在寒冷的冬天和炎热的夏天存活下来呢？
Cold-blooded animals were used to test this hypothesis.
冷血动物被用来验证这一假设。
Some cold-blooded animals sleep all through the winter.
一些冷血动物整个冬天都在睡觉。
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