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By Jessica Berman Washington 19 March 2008 For the first time ever, astronomers using the Hubble space telescope have discovered the presence of the organic molecule methane in the atmosphere around a planet outside our solar system. While astronomer
发表于:2019-01-31 / 阅读(115) / 评论(0)
VOA标准英语2008年（三月）
VOA标准英语2008年（三月）