They are the first cirrus clouds seen on an outer planet.
它们是首次在外行星上发现的卷云。
The hero of this book is a little prince from an outer planet.
本书的主人公是来自外星球的小王子。
We know more about outer space than we do about the interior of our planet.
我们对于外太空的了解比地球内部要多。
A world of books... planet Earth from outer space. Photograph: corbis.
书的世界……从外太空看到的地球。
A world of books... planet Earth from outer space. Photograph: corbis.
书的世界……从外太空看到的地球。
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