碳排放税将为每单位二氧化碳设置一个具体的成本，并因此为碳确定一个清晰的成本。
A carbon tax would set a specific cost per unit of carbon dioxide, thus establishing a clear cost for carbon.
数据表明昆虫的生长速度更快，在获得相同单位体重的情况下，它们相比猪和牛，产生的二氧化碳更少。
The data indicated that insects grow more rapidly, and they emit less carbon dioxide per unit of weight gained than do cattle and pigs.
每单位体重，牛产生的二氧化碳最少。
Cattle produced the least carbon dioxide per unit of body mass.
中国在能源利用效率方面远远低于欧盟等发达国家，也有进一步降低单位GDP二氧化碳排放量的现实需要。
China's energy utilization efficiency is far lower than the EU and other developed countries, and China needs to further reduce carbon dioxide emissions per unit of GDP.
天然气的二氧化碳产生量是每单位煤炭释放能量时二氧化碳产生量的一半。
Gas emits about half as much carbon dioxide as coal per unit of energy produced.
作为一种主要的截热气体，二氧化碳的产生量与燃油用量成正比，而奔驰精灵自称是美国市场单位燃油行驶里程最长的汽油驱动车辆。
Production of carbon dioxide, the main heat-trapping gas, is proportional to fuel use, and the Smart claims to be the highest-mileage car powered by gasoline on the American market.
所有发达国家在1990年至2005年的15年中，单位GDP的二氧化碳排放强度只下降了26%，中国则下降了46%。
From 1990 to 2005, CO2 emission intensity per unit of GDP of all developed countries only dropped by 26%, China dropped by 46%.
拉梅什阐述了印度提出的实现其削减排放强度的一系列措施。 排放强度是指单位GDP排放的二氧化碳数量。
The minister outlined a series of measures by which India proposes to meet its target on reducing emissions intensity, or the amount of carbon-dioxide emissions per unit of gross domestic product.
大气层里二氧化碳含量的测量单位是ppm，即一百万体积的空气中所含二氧化碳的体积数。
The level of carbon dioxide in the atmosphere is measured in parts per million (PPM).
中国已经承诺，到2020年将单位经济产出的二氧化碳排放削减40%至45%，但到目前为止一直要求发达国家资助其实现这一目标。
China has committed to cut its emissions per unit of GDP by 40-45 per cent by 2020 but had hitherto demanded financing from the developed world to help it achieve this.
今年早些时候，二氧化碳水平达到每百万400单位。
Earlier this year carbon dioxide levels reached 400 parts per million.
另外，美国经济的能源强度（单位GDP的能源用量）在2010年增加了0.7%，同时美国能源的碳排放强度（单位能源的二氧化碳排放量）也略微增加，而2009年却减少了2.4%。
There was also a slight increase in the CO2 intensity of U.S. energy supply (CO2 per unit of energy) in 2010, which is in contrast to a drop of 2.4% in 2009.
到那时，大气中二氧化碳水平将达到每百万935单位，这意味着大气中的二氧化碳含量将达到近0.1%。
By that time, carbon dioxide levels in the atmosphere will have reached 935 parts per million, meaning the gas comprises nearly 0.1 per cent of the atmosphere.
中国人均二氧化碳排放量世界排名第92，每单位GDP排放的二氧化碳弹性系数非常小。
The amount of China's per-capita carbon dioxide emissions ranked 92nd in the world, and the elasticity coefficient of carbon dioxide emissions per-unit GDP was very small.
碳补偿是指通过减少、避免或隔离一定量的二氧化碳以抵消其他地方所产生的等量的二氧化碳。碳补偿可以量化和售卖时的计量单位为吨。
A carbon offset is a unit of carbon dioxide equivalent that is reduced, avoided, or sequestered to compensate for emissions occurring elsewhere.
每一个学生将计算得出吸收每个家庭成员由于能源使用而产生的二氧化碳所需的森林面积(单位：公顷)。
Each student is to calculate the forest area in hectares needed to absorb the carbon dioxide (CO2) each their family members produces when consuming energy.
每一个学生将计算得出吸收每个家庭成员由于能源使用而产生的二氧化碳所需的森林面积(单位：公顷)。
Each student is to calculate the forest area in hectares needed to absorb the carbon dioxide (CO2) each their family members produces when consuming energy.
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