另一个主要问题就是交通对环境的影响，这约占总二氧化碳排放量的25%。
Another major concern is the environmental impact of transport, which accounts for roughly 25% of total carbon dioxide emissions.
总二氧化碳浓度自表层至底层和自陆架坡折区到近岸和外海由低变高。
The total carbon dioxide concentration increases from the surface layer to the bottom layer, and from the shelf break area to the near shore and to the outside sea.
全世界范围内，所有人类活动造成的二氧化碳排放中，水泥生产要占到总排放量的5%。
Worldwide, cement production accounts for about 5 percent of all CO2 emissions related to human activity.
如果把其它和二氧化碳有相同效果的温室气体，例如甲烷，也算在内的话，总含量将接近440ppm。
When other greenhouse gases such as methane are included, the total level in the atmosphere, known as the carbon dioxide equivalent, is closer to 440ppm.
仅在亚马逊的树木砍伐每年就会释放7亿吨的二氧化碳，几乎占到该国总排放的一半。
The cutting down of trees in the Amazon alone releases 700m tonnes of carbon dioxide into the air annually, fully half of the country's total emissions.
数据不仅显示出碳排放量的大幅升高记录——2010年二氧化碳总排放量为306亿吨——历史最高。
It is not just that the statistics showing another record leap in carbon output – 30.6 gigatonnes of CO2 over 2010 – to make the highest annual total in history are grim.
现在，机动车每年排放9亿公吨的二氧化碳，约占二氧化碳总排放量的15%。
Today, motor vehicles put out 900 million tonnes2 of carbon dioxide a yearabout 15 per cent of our total output.
尽管生物物质当它燃烧时，像汽油一样释放碳，但是当植物生长时，它们吸收大气中的二氧化碳，减少了总的碳迹。
Even though biomass releases carbon when it is burned, just like oil, when new plants are growing they absorb carbon dioxide from the atmosphere, reducing the overall carbon footprint.
美国和中国是全球温室气体排放量最大的国家，两国的化石燃料二氧化碳排放量占全球总排放量的一半。
China and the United States are the top two emitters of greenhouse gases and, together, produce one half of the world's carbon-dioxide emissions from fossil fuel.
继而也发出了警告，如果未来温室气体排放量继续同2008年持平，预算方案中所提及的二氧化碳总排放量将在2050年之前就远远超出我们的预期目标。
If greenhouse gas emissions continue at the 2008 level, the scientists warned, the budget would be exceeded well before 2050.
20世纪，甲烷造成的温室效应增加量大概占总增加量的20%，二氧化碳大约占60%，其它气体贡献了余下的增加量。
Methane accounts for about 20% of the 20th century enhanced greenhouse effect. Carbon dioxide makes up about 60%, and other gases account for the remainder.
其所生成的二氧化碳依次导入非分散红外检测器，从而分别测得水中的总碳(TC)和无机碳(IC)。
They turn into carbon dioxide generated by non-dispersive infrared detector, which were measured in water of the total carbon (TC) and inorganic carbon (IC).
最后，我们应该也用各种方式减少化石能源总消耗量，尽可能利用核能、太阳能、水能、风能、减少二氧化碳的排放。
Finally, we should also use various means to reduce the overall consumption of fossil energy, as far as possible use of nuclear energy, solar, hydro, wind, to reduce carbon dioxide emissions.
介绍了不同减排方法对二氧化碳的总处理量和二氧化碳保持时间及成本估算。
It is an urgent task to reduce atmospheric emissions of carbon dioxide and mitigate global warming.
纽约运输部门创立的一个十八位会员的委员会，试图降低对二氧化碳的总排放量。
An 18-member commission set up by New York's transportation department seeks to reduce the department's carbon footprint.
有谁会想到，在全球范围内，IT行业产生的温室气体跟全球航空公司产生的一样多？占二氧化碳总排量的2%。
Who would have thought that, globally, the IT industry produces about the same volume of greenhouse gases as the world's airlines do-roughly 2 percent of all CO2 emissions?
信息产业在全球产生的温室气体总量与航空业相当，约占二氧化碳总排量的百分之二，这有谁能料到呢？
Who would have thought that, globally, the IT industry produces about the same volumes of greenhouse gases as the world's airlines do-roughly 2 percent of all CO2 emissions?
信息产业在全球产生的温室气体总量与航空业相当，约占二氧化碳总排量的百分之二，这有谁能料到呢？
Who would have thought that, globally, the IT industry produces about the same volumes of greenhouse gases as the world's airlines do-roughly 2 percent of all CO2 emissions?
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