| 1. | The air there is 95 % carbon dioxide
火星大气的构成中有95 %是二氧化碳。 |
| 2. | Although the atmosphere consists mainly of carbon dioxide , it is too thin to trap heat . so , the
虽然大气主要由二氧化碳组成，但是火星大气实在太稀薄，不能有效把太阳热力困住，因此它的 |
| 3. | Hurtling into the martian atmosphere , the craft were completely beyond the control of the team in pasadena , california
在着陆过程中，加州帕萨迪纳的制控人员对冲入火星大气的探测器完全是鞭长莫及。 |
| 4. | Frozen water is known to exist in the planet ' s polar regions , and water vapor has been detected in the martian atmosphere
已经知道有固态水在这颗行星的极地区域存在，水蒸汽也已经在火星大气中发现。 |
| 5. | The craft may have hit the ground too hard because the atmosphere was thinner than normal due to nearby dust storms at the time
由于火星大气因当时的沙尘暴而比平常稀薄，而使太空船碰撞地面的力量可能过大。 |
| 6. | Nasa loses radio contact with the mars polar lander moments before the spacecraft enters the martian atmosphere
1999年，在火星极地登陆者号宇宙飞船进入火星大气前的瞬间，美国航空航天局失去了与其的无线电联系。 |
| 7. | All dust storms on mars , no matter what size , are powered by sunshine . solar heating warms the martian atmosphere and causes the air to move , lifting dust off the ground
不管规模大小的火星尘暴，其动力都是太阳光。太阳照射使火星大气升温，引起空气流动，并将尘埃带离地面。 |
| 8. | Mars ' s polar ice caps expand each winter as carbon dioxide in the planet ' s atmosphere freezes , the researchers say . but during spring , warmer weather slowly melts the expanded ice
由于火星大气中的二氧化碳的凝结，火星的极地冰帽每个冬天都在扩大。春天，温暖的天气缓慢得融化这些扩展的冰。 |
| 9. | Over the last year three teams , one using instruments on the mars express orbiter and two using ground - based telescopes , say they have detected methane in the martian atmosphere
去年，一组使用“火星特快”探测器，及另外两个通过地面望远镜进行观测的团队，都表示他们在火星大气中发现了甲烷。 |
