It's also expensive and some environmental groups argue that emission reductions can be achieved at a lower cost, using more existing technology such as wind power, solar, and electric cars.
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对比观察这三胎小鼠，科学家们还发现，小鼠宝宝的“性格”也在悄悄发生改变。，更多细节参见WPS下载最新地址
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