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[健康] VOA视频:洛杉矶参与创新性气候变化实验
数十年来,科学家们一直在测量空气质量并观测其对人类健康的影响。目前,科学家们正在测试新的方法,以测量造成气候变化的温室气体。美国之声记者伊丽莎白·李从洛杉矶带回报道,洛杉矶便参与到了这个名为“大城市碳“的项目之中。2013-07-05 编辑:Andersen
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2013-07-05 编辑:Andersen