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人吸入氧气，呼出二氧化碳。
Humans take in oxygen and breathe out carbon dioxide.
《牛津词典》
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CO是一氧化碳的分子式。
CO is the formula for carbon monoxide.
《牛津词典》
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尾气中一氧化碳的排放量限制在4.5% 以下。
The limit for carbon monoxide is 4.5 per cent of the exhaust gas.
《柯林斯英汉双解大词典》
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事实上，它主要是二氧化碳。
In fact it is mostly carbon dioxide.
youdao
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但如今，潜在的问题是二氧化碳过多。
Today, however, the potential problem is too much carbon dioxide.
youdao
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我们不能让大气中的二氧化碳无限制地升高。
We cannot let the CO2 in the atmosphere rise indefinitely.
youdao
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他们忘记了二氧化碳产生的其中一个关键原因。
They forget about one of the key causes of carbon dioxide.
youdao
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大气中的二氧化碳和甲烷阻止热量向太空散发。
Carbon dioxide and methane in the atmosphere block the escape of heat into space.
youdao
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树木可以吸收空气中的二氧化碳，阻止全球变暖。
Trees can take in CO2 in the air and stop global warming.
youdao
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它们消耗二氧化碳，并释放氧气。
They consume carbon dioxide, and release oxygen.
youdao
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如果没有二氧化碳，地球将冻结。
Without carbon dioxide, the planet would freeze over.
youdao
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谁最应该为二氧化碳排放负责？
Who is most responsible for carbon emissions?
youdao
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在他看来，二氧化碳才是罪魁祸首。
Carbon dioxide, in his view, is the main culprit.
youdao
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森林所需的并不仅仅是二氧化碳。
It's not just carbon dioxide that feeds a forest.
youdao
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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.
youdao
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二氧化碳是植物食物的来源。
Carbon dioxide is a source of plant food.
youdao
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你知道的，二氧化碳意味着温室气体。
And as you know, carbon dioxide is implicated as a greenhouse gas.
youdao
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但是这些二氧化碳从哪里来？
But where did the CO2 come from?
youdao
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地球大气中二氧化碳的水平是其中之一。
The level of carbon dioxide in Earth's atmosphere is one.
youdao
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天然气的二氧化碳排放量只有煤的一半。
Gas power emits just half the carbon-dioxide of coal.
youdao
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它已经是世界上最大的二氧化碳排放国。
It has become the world's biggest emitter of carbon.
youdao
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二氧化碳是地球的恒温器。
Carbon dioxide is the planet's thermostat.
youdao
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它是一个二氧化碳的容器。
In this case, it's a container of carbon dioxide...
youdao
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但几乎没有一家工厂消除二氧化碳的排放。
But almost none of them remove carbon dioxide.
youdao
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而今天过多的二氧化碳正在导致全球变暖。
Unlike today where too much carbon is causing global warming.
youdao
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它最多只能捕获90%的二氧化碳排放量。
At best it can only sequester 90 percent of the carbon emitted.
youdao
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是不是因为我呼吸系统中的二氧化碳在作怪？
Could it be the carbon dioxide in my respiratory system?
youdao
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不过二氧化碳的直接效应不是唯一可担心的。
But carbon dioxide's direct effect is not the only thing to worry about.
youdao
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本周，他放弃了关于二氧化碳排放税的计划。
This week, he abandoned his plans to bring in a carbon tax.
youdao
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本周，他放弃了关于二氧化碳排放税的计划。
This week, he abandoned his plans to bring in a carbon tax.
youdao