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[VOA慢速-时事新闻] VOA慢速英语(翻译+字幕+讲解):欧洲太空总署等机构计划清理太空垃圾
European and United Nations agencies are developing a plan for worldwide action on dealing with waste in outer space, commonly called space junk.2019-06-30 编辑：emma
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2019-06-30 编辑：emma
