Under the atmosphere, scientists think there is a very thin crust of carbon and oxygen.
科学家们认为在大气层下存在着一层由碳和氧组成的稀薄地壳。
First produced in a lab back in 2004, graphene is essentially a single layer of pure carbon atoms bonded together in a honeycomb lattice so thin it's actually considered two-dimensional.
石墨烯最早在2004年诞生于一个实验室，本质上是一层由纯碳原子组成的蜂窝状晶格层，薄到竟被认为是二维物质。
Graphene is a flat sheet of carbon just one atom thick—with the carbon atoms arranged in a honeycomb lattice.
石墨烯是一种只有单原子厚度的碳原子平面层——碳原子按蜂窝状晶格排列。
That represents more than six million tonnes of carbon a day.
这相当于每天600多万吨碳。
Compared to the 1960s, each hectare of intact African forest has trapped an extra 0.6 tonnes of carbon a year.
和六十年代相比，每年每公顷原始森林额外多吸收了0.6吨碳排放。
And the result? Well not quite what I'd imagined - my family is responsible for almost 10 tons of carbon a year!
可是结果如何呢，然而与我想象中的大相径庭的是，我的家庭居然会承担几乎每年十吨的碳消耗量！
It reckons the scheme is likely to affect only 1, 000 companies, that emit more than 25, 000 tonnes of carbon a year.
据估计这个计划可能只会影响1000家公司，他们每年的炭排放超过25000吨。
Engheta and Vakil's research shows how transformation optics might now be achieved using graphene, a lattice of carbon a single atom thick.
Engheta和Vakil的研究展示了如何运用石墨薄膜(单原子厚度的碳原子点阵)来实现变换光学。
Studies suggest as much as 900 million metric tons of carbon a year could be locked up this way—and improve the soil's ability to grow crops as well.
一系列研究发现，通过此方法每年将有高达9亿公吨的碳会被锁定——同时改良土壤肥力更好地种植各种谷物。
A spokesperson commented that levels of carbon dioxide were very high.
发言人称二氧化碳的含量很高。
A third is certain basic chemicals such as carbon, oxygen and nitrogen.
第三种是某些基本的化学物质，如碳、氧和氮。
To reduce air pollution, the government needs to impose a ceiling on carbon emissions.
为减少空气污染，政府需要设定碳排放上限。
Economic reasoning shows that the least expensive way for each country is to put a price on carbon emissions.
经济推理表明，对每个国家来说，最便宜的方法是为碳排放定价。
After all, even if profit is the motive, the net result is a reduction in the hotel's "carbon footprint".
毕竟，即使动机是利润，最终的结果也是减少了酒店的“碳足迹”。
It would also suggest that any firm factoring a steep carbon price into its plans should quietly lower it.
这同样也暗示那些将高昂的碳排放费用计划在内的公司将会不动声色地降价。
A tax on upstream carbon sources is one easy way to put a price on carbon emissions, although some countries may wish to use other methods, such as emissions trading schemes.
对上游碳资源征税是为碳排放定价的一种简单方法，尽管一些国家可能希望使用其他方法，例如碳排放交易计划。
Second, once sleep is fully obtained, there is an increase of carbon dioxide and a decrease of oxygen in the blood that persists during NREM.
第二，一旦完全进入睡眠状态，非快速眼动期间血液中的二氧化碳增加，氧气减少。
They found that the aircraft consumed as much as 15% less fuel (coupled with a reduction in carbon dioxide output).
他们发现，飞机消耗的燃料减少了15%（同时二氧化碳排放量也减少了）。
Without gravity to help circulate air, the carbon dioxide you exhale has a tendency to form an invisible cloud around your head.
如果没有重力帮助空气循环，你呼出的二氧化碳会在你头顶周围形成一个看不见的云状物。
The proposed initiative would mandate a reduction of carbon dioxide of 40%.
这个倡议将把二氧化碳排放量强制降低40%。
碳的化合价是4价。
She's a carbon copy of her mother.
她和她妈妈长得一模一样。
She is a carbon copy of her sister.
她跟她姐姐长得一模一样。
Europe's merchant ships spew out around a third more carbon than aircraft do, and nobody is going after them.
欧洲商船排放的碳比飞机多三分之一左右，但没有人去追究它们。
Europe's merchant ships spew out around a third more carbon than aircraft do, and nobody is going after them.
欧洲商船排放的碳比飞机多三分之一左右，但没有人去追究它们。
The shift to a low-carbon economy will help some firms, hurt others and require every organisation that uses much energy to rethink how it operates.
低碳经济的转变将有助于一些公司，不利于一些公司，让每一个大量消耗能源的组织重新思考其运作方式。
Glasgow City Council has made a deal with Scottish Power on carbon emissions.
格拉斯哥市议会与苏格兰电力公司就碳排放达成协议。
Anyone taking all these flights over a year might rack up a carbon footprint totaling more than 35 tonnes.
一年中乘坐所有这些航班的任何人可能都会积累到总计超过35吨的碳足迹。
Efficiency is also a great way to lower carbon emissions and help slow global warming.
提高效率也是减少碳排放和帮助减缓全球变暖的好方法。
The wings are made of a polythene film stretched over a carbon fiber frame.
机翼是由铺在碳纤维框架上的聚乙烯薄膜制成的。
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