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如同古人不惧艰险,长途跋涉,前往未知的他乡,如今的人们探索太空也是为了使生活变得更美好。人们设想在月球建立基地,移民火星,找到另一个如地球一样宜居的星球,并为此付出艰辛努力。吃、穿、住、行是生活中的小事。爸爸妈妈帮我们安排得好好的,同学们不会觉得它们是问题。但宇航员在太空中生活就不一样了,这看起来很平常的四件事直接决定了宇航员能在太空中待多久、走多远。《火星救援》,想必许
As the ancients did not hesitate to take a hard journey, traveled to an unknown place in the world, and nowadays people are exploring space to make life better. People have envisioned establishing bases on the moon, immigrants to Mars, finding another planet that is as livable as the Earth, and making painstaking efforts to that end. Eat, wear, live, travel is a small thing in life. Mom and Dad help us arrange well, classmates do not think they are a problem. But astronauts live different lives in space. The seemingly common four things directly determine how long astronauts can go in space and how far. “Mars rescue”, want to promise