Unlike mammals, lizards and other reptiles are cold-blooded, meaning they can't regulate their body temperatures and so must seek shade when it gets too hot.
和哺乳动物不同，蜥蜴和其它爬虫类是变温动物(即通常所说的冷血动物)，也就是说他们不能调节自身体温，因此当环境过热时他们必须寻找阴凉处栖息。
Unlike mammals, lizards and other reptiles are cold-blooded, meaning they can't regulate their body temperatures and so must seek shade when it gets too hot.
和哺乳动物不同，蜥蜴和其它爬虫类是变温动物(即通常所说的冷血动物)，也就是说他们不能调节自身体温，因此当环境过热时他们必须寻找阴凉处栖息。
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