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Radiation Effect Space is a dangerous place, not only because of meteors (流星)but also because of ra...

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the Apollo mission was very successful  protection from space radiation is no easy job  astronauts will have deformed children or grandchildren  radiation is not a threat to well-protected space explorers  
it protects him against the harmful rays from space  it provides sufficient light for plant growth  it supplies the heat necessary for human survival  it screens off the falling meteors  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn't worry about radiation damage  
is insignificant  seems overestimated  is enormous  remains unknown  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn't worry about radiation damage  
The Atmosphere and Our Environment  Research on Radiation  Effects of Space Radiation  Importance of Protection Against Radiation  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  
The Atmosphere and Our Environment  Research on Radiation  Effects of Space Radiation  Importance of Protection Against Radiation  
exposure to even tiny amounts of radiation is fatal  the effect of exposure to radiation is slow in coming  radiation is avoidable in space exploration  astronauts in spacesuits needn't worry about radiation damage  
the Apollo mission was very successful  protection from space radiation is no easy job  astronauts will have deformed children or grandchildren  radiation is not a threat to well-protected space explorers  
the effect of exposure to radiation is slow in coming  exposure to even tiny amounts of radiation is fatal  radiation is avoidable in space exploration  astronauts in spacesuits needn’t worry about radiation damage  

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