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它们的视力非常好。它们有恒定的体温。
Their eyesight is very good. They have a constant body temperature.
youdao
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主要的特征是：体温不恒定；…
The main features are: body temperature is not constant; …
youdao
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主要的特征是：体温不恒定；…
The main features are: body temperature is not constant; …
youdao