| 1. | On the moon and mars , where gravity is weaker than on earth , that is generally the case
而在月球，火星这些低重力环境，恰恰是这个类型。 |
| 2. | On the moon and mars , where gravity is weaker than on earth , that is generally the case
因为月球和火星上的引力小于地球，所以通常奔跑更加合算。 |
| 3. | On the moon and mars , where gravity is weaker than on earth , that is generally the case
在月亮和火星上，引力比地球要小，因此跑步比走路更省力。 |
| 4. | It ' s cold on mars , but during the day it feels like earth winter . on both the moon and mars astronauts would need protection from the temperature
火星是寒冷的，它的白天就像地球的冬天。月球和火星上的宇航员都需要保护措施。 |
| 5. | Cardiff of nasas goddard space flight centre is leading a several team developing ways to provide astronauts oxygen they will need on the moon and mars . lunar soil is rich in oxide
美国太空总署戈达德飞行中心的卡迪夫，正领导一个小组研究怎样为未来在月球和火星上的太空人提供氧气。 |
| 6. | Astronauts going to the moon and mars for long periods of time must contend with the basic health risks from space travel : radiation , the loss of muscle and bone , and the psychological challenges of isolation
长时间到月球和火星的太空人，必须全力应付太空之旅的基本健康风险，包括辐射、肌肉和骨质流失，及孤独所构成的心理挑战。 |
| 7. | Jean hunter , a professor of agricultural and biological engineering at cornell university , is at the midpoint of a three - year study funded by the national aeronautics and space administration to develop menus for months - long space missions to the moon and mars , where astronauts will grow and prepare their own food
康奈尔大学的农业和生物工程学家珍涵特，现正进行一项由太空总署所赞助的三年研究计画，这个研究已经进行了一半，是要为长达数月的月球和火星之旅设计菜单，而且太空人将要自己养植和料理食物。 |
