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U.S. Energy Secretary Rick Perry sees exporting technologies like carbon capture utilization, so-called clean coal technology, to ensure American energy security. In an interview with VOA Contributor Greta Van Susteren, Perry called battery developme
发表于:2018-12-01 / 阅读(321) / 评论(0)
VOA标准英语2018年(九月)
VOA标准英语2018年(九月)