| 1. | The surface of the sun is a glowing gas envelope .
太阳的表面是一层炽热的气体层。 |
| 2. | A cur barking at the sun cannot detract from its glory .
狂犬吠日，无损于太阳的光辉。 |
| 3. | There is no doubt they are responsible for solar energy .
这就是太阳的能量，毫无疑问。 |
| 4. | Gleam of sunshine came round the edge of the dark cloud .
从黑云的边缘露出了太阳的光线。 |
| 5. | The thermonuclear reactions of the sun energize the human body .
太阳的热核反应给人类以能量。 |
| 6. | Seen from the earth, the sun rotates in about 27 days .
从地球上观测，太阳的自转周期约为27天。 |
| 7. | The last ray of the sun had already faded from the cloud-edges .
太阳的余辉已经渐次消失在云端里。 |
| 8. | It screens out lethal ultraviolet and x-rays from the sun .
它阻挡了来自太阳的致命的紫外线和X射线。 |
| 9. | This field traps high-energy protons and electrons from the sun .
这个场捕获来自太阳的高能质子和电子。 |
| 10. | One astronomical unit equals the distance from the earth to the sun .
一天文单位等于从地球到太阳的距离。 |
