1. Without the air to stop some of the sun´s heat, every part of the earth would be burning hot when the sun´s rays strike it.
    假如没有空气吸收太阳的一些热量，地球在阳光照射下就会灼热不堪。

2. Without the air to hold some of the sun´s heat, the earth would be freezing cold at night, too cold for us to live. 2
    如果没有空气储存大部分太阳热量，地球在夜晚就会冻得冰冷，人们便无法生存。

3. The more the rays are spread out, the less heat they give to the part of the earth they touch.
    但光线越扩散，它给予照射地区的热量就越少。

4. The stars are so fiery hot that they give off great light and heat — more than the hottest, brightest fire you can imagine.
    星星像火一样的灼热，释放大量的光和热——比我们所能想象的最热、最亮的火所发出的能量还要大。

5. The pleasant warmth of the coast turned into the fiercest kind of heat.
    海岸那宜人的温暖变成了最猛烈的酷热。

6. They burst into the mind, glowing with the heat of creation. How they do it is a mystery but they must come from somewhere.
    它们猛然间迸入人的脑海，闪烁着创造的光芒。它们是如何出现在人的脑海中的呢？这还是个谜。但这些思想一定来自某个地方。

7. Trailing behind us were white stripes created by heat from our exhaust hitting sub-zero air.
    在我们的身后，拖着一道道白色的尾巴，那是我们的排气口放出的热气与低于零度的大气相遇而形成的。

8. Natural gas, an outstanding energy fuel, can be used to heat homes, make electricity, and power cars.
    天然气这种优良的能量燃料可以用于家庭取暖、发电和驱动汽车。

9. Heat causes the conversion of water into steam.
    热使水变为蒸汽。

10. Heat deforms plastic.
    热使塑料变形。