第13页

信息发布者：
Mars
helmet
oxygen tank
dried food
power pack
sleeping bag
gravity
life on Mars
can't reach my food
wear special boots
eat dried food
thought
about
traveling
neither
What
do
you
think of
What
live
on 
Mars
fruit
vegetables
have
to
eat
dried 
food
so
planet
crowded
polluted
pollute
pollution
rapid
rapidly
increase
passenger
uncomfortable
comfortable
oxygen
tasty
taste
specially
special
float
compare
interplanetary
network
challenging
challenge
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