科研之友
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摘要
<正>There are stars of all sizes(尺寸)in the sky. Some look brighter(更亮的)because they are larger(更大的). Some look brighter because they are closer(更近的)to the Earth.Starlight(星光)can travel far. If a star looks small and dim(暗淡的), it still may be(仍然可能是)a really gian(t巨大的)star. It is just too far away from the Earth.
