COROT-7b is a rocky mass like Earth, though twice its size.
尽管COROT - 7b的大小是地球的两倍，但它像地球一样拥有大量的岩石。
The smallest known exoplanet is Corot-7b, which has a diameter less than twice that of Earth.
科罗- 7b是已知外部行星中最小的一个，它的直径不超过地球直径的两倍。
This planet, CoRoT-7b, was the first confirmed rocky world outside our solar system, but it doesn't look like a particularly pleasant place to live.
行星CoRoT - 7b，是第一颗被证实的由岩石组成的在太阳系之外的行星，但它看起来并不像一个特别舒适的生存地点。
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