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来源:雅诚德英语网
They are truly lumps of nebular matter, probably similar in composition to the matter from which planets were assembled.
它们的确是星云物质组成的团块,其组成物质可能与行星形成时的物质相似。
They are truly lumps of nebular matter, probably similar in composition to the matter from which planets were assembled.
它们的确是星云物质组成的团块,其组成物质可能与行星形成时的物质相似。