Mr. Obama's plan to curb carbon dioxide emissions, though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.
尽管奥巴马的二氧化碳减排计划是必要的，但这远不是免费的，无论他在这个问题上发表的充满希望的演讲可能会暗示什么。
Mr. Obama's plan to curb carbon dioxide emissions, though necessary, will be far from cost free, whatever his sunny speeches on the subject might suggest.
尽管奥巴马的二氧化碳减排计划是必要的，但无论他在这个问题上发表的充满希望的演讲可能会暗示什么，这远不是免费的。
Unlike such fossil fuels, which release climate-changing carbon dioxide when burnt, nuclear power is "carbon free".
核能与矿物燃料不同，完全没有碳元素，不会在燃烧时释放改变大气的二氧化碳。
Mr Obama's plan to curb carbon dioxide emissions, though necessary, will be far from cost-free, whatever his sunny speeches on the subject might suggest.
无论奥巴马的演讲如何耐人动听，其削减二氧化碳排放的计划(尽管是必要的)将耗费巨额资金。
More than 90 percent of the matter that makes up trees was once water and free-floating atmospheric carbon dioxide.
形成一棵树所需的物质里，90%都来自于水分和空气中的二氧化碳。
Under a mammoth carbon-emissions bill now working its way through Congress, 85% of valuable permits to emit carbon dioxide (which might all have been auctioned) will be given away free.
国会通过一项野心勃勃的碳排放法案，规定将免费赠送85%二氧化碳排放许可证(可能已经通过拍卖的方式售出)，这些许可证是非常昂贵的。
Instead of reacting with carbon from the sugar to form carbon dioxide, it forms highly reactive molecules called free radicals.
它们没有和糖中的碳反应形成二氧化碳，而是形成了高活性的分子，称之为：自由激进分子。
These predict that if the level of carbon dioxide, methane and so on in the atmosphere continues to rise, then the Arctic Ocean will be free of floating summer ice by the end of the century.
他们预计，如果大气中二氧化碳，甲烷等气体比重继续上升，那么到本世纪末北冰洋的夏天将不再有浮冰。
The density profile and the free energy profile of carbon dioxide have a "mirror symmetry", where the high density coincides with the free energy well.
二氧化碳的密度分布和自由能分布有一个明显的“镜面对称”的结构，高密度区域对应自由能的深阱。
In the future, the gases that come out of power-plant smokestacks will be virtually free of carbon dioxide emissions.
将来，从发电厂烟囱中排放出来的气体将不再含有二氧化碳。
Carbon dioxide propellant for odor-free, fume-free inspection.
无气味，无油烟检测的二氧化碳推进剂。
But it is a carbon-dioxide-free way of making a lot of electricity, and a collecting area the size of Austria could supply the world.
但这是一种二氧化碳零排放的大规模发电方式，而且集中起相当于奥地利国土大小的面积就可以为整个世界提供电力。
But it is a carbon-dioxide-free way of making a lot of electricity, and a collecting area the size of Austria could supply the world.
但这是一种二氧化碳零排放的大规模发电方式，而且集中起相当于奥地利国土大小的面积就可以为整个世界提供电力。
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