水解时，放出二氧化碳。
细菌消化废水中的碳水化合物，释放出二氧化碳。
Bacteria chew up carbohydrates in the wastewater, producing carbon dioxide.
易溶于酸和铵盐溶液，遇稀酸即分解放出二氧化碳。
Soluble in acid and ammonium salt solution of dilute acid decomposition to emit carbon dioxide.
它们不断地吸收氧气来并把糖类转换成能量，释放出二氧化碳。
They're taking in oxygen to help them convert sugars into energy, and releasing carbon dioxide.
要求清洁，是因为要让这种能源不排放出二氧化碳——气候变化的罪魁祸首。
Clean, because it must not emit any carbon dioxide-which is driving climate change.
碳酸钙是高分子材料中常用的无机填料，在高温时会分解放出二氧化碳而失重。
As a common inorganic filler in macromolecular material, calcium carbonate decomposes at high temperature with the removal of carbon dioxide.
IPCC曾估计，飞机排放出氧化氮产生的温室效应和飞机排放出二氧化碳的作用相当或者略小一点。
The IPCC has estimated that the positive radioactive forcing due to the release of NO2 from aircraft could be of similar magnitude or smaller than the effect of CO2 release from aircraft.
美国科学家认为，先民们虽然人口很少且所能生产的粮食数量不多，但他们为此将大片土地通过烧荒变为耕地，从而排放出二氧化碳。
The US scientists believe that small populations released carbon emissions as they cleared large tracts of land to produce relatively meagre amounts of food.
2006年，城市人口约占世界人口的50%，但这些城市人口却消费掉了总能源消费量的三分之二，并排放出二氧化碳，占能源消耗相关的二氧化碳排放总量的70%以上。
In 2006, about 50% of the world's population was urban, but they consumed two-thirds of the total energy used and emitted more than 70% of the energy-related carbon dioxide emissions.
相比之下，人的心脏只有四个心室，其中的两个心室收缩将血液压进动脉输送到肺部，在那里吸收氧气，放出二氧化碳，而另两个心室则将完成气体交换后的血液输送到到全身。
A human heart, by contrast, has four chambers. Two of these pump blood to the lungs, where it picks up oxygen, then the other two pump this oxygenated blood throughout the body.
"浮游植物生活在海洋表面，在那里他们把二氧化碳释放到海里，同时放出氧气。
Phytoplankton live at the ocean surface, where they pull carbon dioxide into the ocean while giving off oxygen.
在穹顶内部，绿色植物可以制造小气候，吸收二氧化碳放出氧气。
Inside the dome, a jungle of greenery creates a microclimate that soaks up carbon dioxide and puts out oxygen.
由于水平面上升，植被被水淹没，开始腐烂，释放出甲烷——一种比二氧化碳威力更大的温室气体。
The vegetation overwhelmed by the rising waters decays to form methane-a far worse greenhouse gas than carbon dioxide.
例如平均气温的上升，它会使长期冰藏在冰层里的二氧化碳和甲烷从永冻层里释放出来——相当于温室气体二氧化碳的20倍密度。
Rising average temperatures, for example, threaten to unlock long-frozen stores of carbon dioxide and methane -- at least 20 times as potent a greenhouse gas as CO2 -- from the region's permafrost.
燃烧石化燃料释放出的二氧化碳被很多科学家认为是导致气候变化的最主要的人为因素。
Burning fossil fuels releases carbon dioxide, which many scientists describe as the biggest man-made contributor to global warming.
从工厂烟囱排放出来的烟将会混合一种冷冻氨的混合化学物质，然后将该化学物质加热，释放出的二氧化碳被注入深水井中。
In the factory, smoke diverted from the plant's chimney is mixed with a chilled ammonia-based chemical. The chemical is then heated, releasing the carbon dioxide, which is pumped deep into the Wells.
另外，当所有这些食物腐烂时，会释放出大量甲烷(一种比二氧化碳更厉害的温室气体)。
On top of that, a lot of methane (a far more potent greenhouse gas than carbon dioxide) emerges when all this food rots.
换句话说，你开车的时候，发动机在燃烧汽油的同时会释放出一定量的二氧化碳，这个量由耗油量和行驶里程决定。
In other words: When you drive a car, the engine burns fuel which creates a certain amount of CO2, depending on its fuel consumption and the driving distance.
同样化石燃料排放出的二氧化碳会被捕捉并储藏在底下——这个过程被称为“碳封存”（carbon sequestraion）。
There is also the potential to capture the carbon dioxide emitted from fossil fuels and store it underground—a process called "carbon sequestration."
加热蒸汽需要燃烧大量的天然气，这个过程排放出大量的二氧化碳。
然而，大量的二氧化碳埋葬在地底，当你钻探时高温水带动涡轮机，这时二氧化碳通常会被释放出来。
There is, however, a lot of carbon dioxide underground, and when you drill for superheated water to turn your turbines, you often release it.
研究小组指出，就连这个数字也可能估计不足，因为它没有解释正反馈的方方面面，比如释放出甲烷和二氧化碳正在融化的永久冻土层。
Even the new figure could be an under-estimate, the team suggests, because it doesn't account for the full range of positive feedbacks, such as melting permafrost releasing methane and carbon dioxide.
你的生活方式决定了你每天排放出的二氧化碳数量，而二氧化碳的排放导致了温室气体的上升，并引起全球变暖。
Your lifestyle determines the amount of carbon dioxide emitted on a daily basis, which in turn contributes to the greenhouse gases that are causing global warming.
因为被它们破坏的植物腐烂后，植物所释放出来的二氧化碳会储存在大气中，这样更增强了全球变暖的问题。
As the trees they've killed decompose, they release the carbon dioxide that they've been storing into the atmosphere. That adds to the global warming problem.
植物在其生长期内不断吸收大气中的二氧化碳，当燃烧这些植物以获取能量及／或热量的时候，它们会将二氧化碳释放出来。
The carbon dioxide released when burning them to produce power and/or heat was extracted by the plant from the atmosphere during its lifetime.
国际海事组织正在讨论规章可能迫使船只排放出更少的二氧化碳，并已经对其他污染物提出更严格的限制。
The International Maritime Organisation is discussing regulations that may force ships to belch out less carbon dioxide, and has introduced tighter limits on other pollutants.
国际海事组织正在讨论规章可能迫使船只排放出更少的二氧化碳，并已经对其他污染物提出更严格的限制。
The International Maritime Organisation is discussing regulations that may force ships to belch out less carbon dioxide, and has introduced tighter limits on other pollutants.
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