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信息发布者：

dried food

power pack

sleeping bag

planet

passenger

compare

polluted

pollute

rapid

rapidly

increase

increase

uncomfortable

comfortable

uncomfortably

comfortably

tasty

taste

specially

special

think about

travel into space

me neither

get to my food

as well as

live on Mars

by the year 2100

become more and more crowded

the rapid increase in population

start all over again

large numbers of passengers

at the speed of light

the journey to Mars

in the form of pills

be designed to do

compare to/with

in some ways

prevent themselves

from floating off into space

connect to

I've never

thought about travelling into space.

How do you like life here?

It is hoped that people could start all over

again and build a better world.

The gravity on Mars is only about

three- eighths of that on the Earth.

Compared with life on the Earth, life on Mars

would be better.in some ways.

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