They also re-emit some of the heat they absorb.

它们也会再次放射走一些已经吸收的热量。

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All bodies emit heat rays no matter how low or high their temperatures are.

不论物体的温度有多低或多高，它们都发射出热射线。

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Fireflies emit light but not heat.

萤火虫发光但不放出热。

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Fireflies emit light but not heat.

萤火虫发光但不放出热。

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