单词:broadband equipment
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AS IT IS 2014-06-27 Obama Announces Effort to Protect Pacific Ocean 奥巴马宣布保护太平洋倡议 President Barack Obama has launched a new effort to protect parts of the Pacific Ocean from overfishing and environmental damage. He announced hi
By Carol Pearson Washington, DC 18 July 2006 watch Air Pollution report Scientists at the Alfred Wegener Institute for Polar and Marine Research observed the highest air pollution on record above the Arctic Circle in May. Air pollution has been link
Although chemistry had come a long way in the century that separated Newton and Boyle from Scheele and Priestley and Henry Cavendish, it still had a long way to go. Right up to the closing years of the eighteenth century (and in Priestley's case a li
Plastic Pollution NB: This is not an accurate word-for-word transcript Dan: Hello and welcome 6 Minute English from the BBC. Im Dan Walker Smith and today Im joined by Kate. Kate: Hello Dan. Dan: Now today Kate and I are talking about pollution. Kate
Despite pledges in the last year to fight pollution, Beijing saw barely any improvement in air quality in 2013. The Beijing Environmental Protection Bureau says the intensity of major air pollutants remained much the same in 2013 as they were in the
奥巴马宣布保护太平洋倡议 President Barack Obama has announced a new initiative to protect parts of the Pacific Ocean from overfishing and environmental damage. He announced his plan in a video message to an international conference on the