英文關鍵字
aerial
aerospace
astronaut
cargo
carrier
cosmonaut
craft
engine
engineering
equipment
expedition
explore
flight
gasoline
history
huge
imagination
international
iss
launch
missile
mission
monument
moscow
nasa
nozzle
park
past
planet
power
rail
research
rocket
russia
russian
ship
soviet
spacecraft
spaceship
spy
stage
technology
train
travel
ussr
vostok