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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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The most recent research indicates that they were cold-blooded animals.
最近的研究表明他们是冷血动物。
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The most recent research indicates that they were cold-blooded animals.
最近的研究表明他们是冷血动物。
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