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Astronauts on shorter shuttle missions(使命) often work very long days. Tasks are scheduled so tightl...

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satellite       space shuttle       plane       airport shuttle  
have managed the rescue of the astronauts orbiting the earth  still have been unable to conceive of any way to save the astronauts  have attempted to help the astronauts out of danger unwillingly  have succeeded in repairing the damaged left wing of the shuttle  
It will base its design on that of the Apollo program.  It will use parts only from the Apollo program.  It will make use of the Apollo program and the space shuttle.  It will develop new designs and make new components.  
People will land and remain on the moon.  Equipment will be carded and installed there.  More CEVs will be made regularly.  A special device will be used in landin  
having killed   killing   being killed   killed  
have managed the rescue of the astronauts orbiting the earth  still have been unable to conceive of any way to save the astronauts  have attempted to help the astronauts out of danger unwillingly  have succeeded in repairing the damaged left wing of the shuttle  
Entering the orbit and landing on the moon.  Landing and walking on the moon surface.  Exploration and researches into the moon composition.  Exploration and construction of a moon bas  
having killed    killing    being killed    killed  
have managed the rescue of the astronauts orbiting the earth  still have been unable to conceive of any way to save the astronauts  have attempted to help the astronauts out of danger unwillingly  have succeeded in repairing the damaged left wing of the shuttle  
ensure the moon traveling and the moon base construction  speed up the moon base construction and other activities  guarantee the quality of the researchers’ scientific study  set up new training laboratories for future missions to Mars  
They will be launched separately.  CEV will dock with the moon lander.  They will be launched together.  The moon lander will hold four astronauts.  

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