Humans take in oxygen and breathe out carbon dioxide.
人吸入氧气，呼出二氧化碳。
In fact it is mostly carbon dioxide.
事实上，它主要是二氧化碳。
They forget about one of the key causes of carbon dioxide.
他们忘记了二氧化碳产生的其中一个关键原因。
Today, however, the potential problem is too much carbon dioxide.
但如今，潜在的问题是二氧化碳过多。
Carbon dioxide and methane in the atmosphere block the escape of heat into space.
大气中的二氧化碳和甲烷阻止热量向太空散发。
Carbon dioxide is a source of plant food.
二氧化碳是植物食物的来源。
Carbon dioxide is the planet's thermostat.
二氧化碳是地球的恒温器。
But almost none of them remove carbon dioxide.
但几乎没有一家工厂消除二氧化碳的排放。
They consume carbon dioxide, and release oxygen.
它们消耗二氧化碳，并释放氧气。
It's not just carbon dioxide that feeds a forest.
森林所需的并不仅仅是二氧化碳。
Carbon dioxide, in his view, is the main culprit.
在他看来，二氧化碳才是罪魁祸首。
In this case, it's a container of carbon dioxide...
它是一个二氧化碳的容器。
Gas power emits just half the carbon-dioxide of coal.
天然气的二氧化碳排放量只有煤的一半。
Without carbon dioxide, the planet would freeze over.
如果没有二氧化碳，地球将冻结。
Could it be the carbon dioxide in my respiratory system?
是不是因为我呼吸系统中的二氧化碳在作怪？
Cattle produced the least carbon dioxide per unit of body mass.
每单位体重，牛产生的二氧化碳最少。
Carbon labels need not just measure carbon-dioxide emissions.
碳标签需要的不仅是对二氧化碳排放量的量定。
OF ALL the blights afflicting the sea, carbon dioxide is just one.
在所有正折磨着大海的破坏分子中，二氧化碳只为其一。
A key player in champagne's taste is its dissolved carbon dioxide.
香槟酒之所以美味，溶解在酒中的二氧化碳功不可没。
But rotting plant matter returns carbon dioxide to the atmosphere.
但是腐烂的植物又转化成二氧化碳返回到大气层中。
Avoid carbonated drinks and beer. They release carbon dioxide gas.
避免饮用碳酸饮料和啤酒，它们会释放出二氧化碳气体。
And as you know, carbon dioxide is implicated as a greenhouse gas.
你知道的，二氧化碳意味着温室气体。
With an excess of carbon dioxide, Venus is hot enough to melt lead.
而二氧化碳过多的话，金星可以热到能融化铅的地步。
"More carbon dioxide can dissolve in cold water than warm," he said.
他说：“二氧化碳在冷水中的溶解度要高于在暖水中。”
Photosynthesis creates plant matter out of carbon dioxide and water.
光合作用把二氧化碳和水转化成植物生长所需物质。
How come a big ice age happened when carbon dioxide levels were high?
在大冰河期，二氧化碳含量水平怎么会高呢？
Another way would be growing algae in the ocean to suck up carbon dioxide.
另外一种办法是可以通过在海洋里种植藻类来吸收二氧化碳。
The mangrove forest also sequesters carbon dioxide in its root system.
红树林的的根系可以起到隔绝碳的作用。
Increasing carbon dioxide in the atmosphere has a double effect on coral.
大气中不断上升的二氧化碳含量对珊瑚有双重作用。
Carbon dioxide in pure form can asphyxiate because it is heavier than air.
因为二氧化碳比空气要重，纯净的二氧化碳可以使人窒息。
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