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A world of books... planet Earth from outer space. Photograph: corbis.
书的世界……从外太空看到的地球。
youdao
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Maybe the earth has been visited by intelligent creatures from outer space.
也许太空的智慧生物已经访问过地球。
youdao
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Maybe the earth has been visited by intelligent creatures from outer space.
也许太空的智慧生物已经访问过地球。
youdao