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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But the earth itself radiating energy outwards in the form of long-wave heat rays.

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What is certain is that the limitless imagination of mankind has turned science fiction heat rays into the near future reality of weapons on the battleground.

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The museum is newly illuminated by 3, 800 individual LED lights, which lack the paint-destroying heat and UV rays of incandescent bulbs.

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