| 1. | Asteroid lies between mars and jupiter . 小行星位于火星与木星之间。 |
| 2. | Mars is too dry and poor in oxygen . 火星上面过于干燥,并且缺乏氧气。 |
| 3. | The martian landscape is extremely varied . 火星上的景象变化极大。 |
| 4. | Mars is too dry and poor in oxygen . 火星过于干燥,而且缺乏氧气。 |
| 5. | The surface of mars is remarkably diverse . 火星的表面参差不齐。 |
| 6. | The fire is sparking dangerously . 那堆火迸出火星,十分危险。 |
| 7. | There will be some sparking initially . 起初将迸发火星。 |
| 8. | They may solve a number of problems about mars . 它们可能解释一些关于火星的问题。 |
| 9. | Sparks from the chimney ignited the roof boards .. 从烟囱里冒出的火星燃着了屋顶板。 |
| 10. | A log broke in two and sent up a shower of sparks . 一根木头断成两截,爆起一团火星。 |