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Five, four, three, two, one, engine start...
五、四、三、二、一、引擎启动…
If you are ever lucky enough to book a flight on the first rocket to the red planet,
如果你幸运地订到一张发射到这颗红色行星火箭的票，
you'd better be sure you've packed everything.
你最好确定你已经准备好了所有的东西。
The one-way trip is at least six months with no turning back if you've forgotten something.
这次单程旅行最少要在6个月以上,如果你忘了什么东西，可没有回头路。
We can go to the moon and get back in a week.
我们可以去月球,并在一个星期内回来。
It takes about three years go to Mars and come back.
而火星来回大约需要3年。
You have to carry your food, you have to recycle your breathing oxygen and your water.
你必须带上食物,你必须循环利用氧气呼吸，而且要准备好水。
So it's a very, very major undertake.
所以这是一个非常,非常必要的步骤。
Within about three days, the earth looks very small.
在大约用时三天的时间,地球看起来就会非常小。
And within a week, it's just another star.
在一个星期内,这将会是另一颗恒星。
And you suddenly are going to realize you are in very deep space and it's gonna be a long time before you can go back.
而你突然意识到你已经身处很深的空间,要花很长时间才能回去。
注：听力文本来源于普特
