This can be really dangerous because there are harmful chemicals in the smoke from both wood and coal and they can seriously pollute the air in your home.
这是非常危险的，因为木材和煤炭产生的烟雾中都含有有害的化学物质，会严重污染家里的空气。
Many people especially those who live in villages in the countryside, burn coal or wood on an open fire.
许多人，特别是那些住在农村的人，在明火上烧煤或木材。
We ran out of coal, and had to burn wood.
煤烧完了，只好烧木头。
Coal is extraordinarily abundant - we'll never run out - and pound-for-pound contains twice as much energy as wood.
地球上的煤炭异常丰富——我们用都用不完——同样体积的煤炭所含的能量是木头的两倍。
They use biomass fuels like wood, crop waste, animal waste or coal.
他们使用木材，作物废料，动物废料或煤炭等生物燃料。
Chemical energy, which is everything from wood to crude oil to gasoline to coal, consists of playing with the electrons, changing their energy state.
从木头、原油、汽油到煤炭，它们中释放出来的化学能量是通过改变其中电子的能量状态实现的。
Villagers have no choice but to use wood, coal or dung fires, raising the risk that young children will be killed by carbon-monoxide poisoning or a bad case of pneumonia ravaging weakened lungs.
村民们除了用木头，煤或者是粪肥来烧火之外别无选择，这样会增加小孩子一氧化碳中毒死亡的危险，肺功能减弱，肺炎得病率增加。
Villagers have no choice but to use wood, coal or dung fires, raising the risk that young children will be killed by carboj-monoxide poisoning or a bad case of pneumonia ravaging weakened lungs.
村民们除了用木头，煤或者是粪肥来烧火之外别无选择，这样会增加小孩子一氧化碳中毒死亡的危险，肺功能减弱，肺炎得病率增加。
For example, a steam engine can use coal, newspaper or wood for the fuel, while an internal combustion engine needs pure, high-quality liquid or gaseous fuel.
例如，蒸汽发动机可以用煤，报纸或木头作为燃料，而内燃机需要用纯的，高质量液体燃料或气体燃料。
More than half of the world's population rely on dung, wood, crop waste or coal to meet their most basic energy needs.
全世界有半数以上人口依靠家畜粪、木柴、庄稼秸秆或煤来满足其最基本的能源需求。
In the late 19th century, millions of human mummies were used as fuel for locomotives in Egypt where wood and coal was scarce, but mummies were plentiful.
19世纪末，在埃及，有数以百万计的木乃伊被用作火车燃料，当地木材和煤炭匮乏，而木乃伊则多的是。
In Ulan Bator, the air pollution is mainly related to the burning of coal, wood and everything else for heating, cooking, and electricity generation.
乌兰巴托空气污染的主要原因是燃烧煤、木材和其它所有用于加热、做饭和发电的材料。
Until recently, the world's energy demands were met almost entirely through the use of fossil fuels: wood, coal, petroleum, and natural gas.
不久之前还几乎全靠木头，煤炭，石油，天然气等化石燃料来满足全人类对能量的需求。
Like most others around the world in the same situation, these Ghanans use traditional fuels (wood, coal, dung) to meet their cooking needs.
和世界其他地区面临同样困境的人们一样，加纳人只好使用传统燃料(木材、煤、粪便)来做饭。
These would work by co-firing (burning a mixture of) wood and coal.
而这需要通过共燃（燃烧混合的）木材与煤来实现。
We do not go out, therefore we do not need many clothes... in the winter time, we do not buy wood and coal.
我们尽量不出门，这样就不需要多少衣服……冬天的时候也不买木柴和煤。
Typically carbon emissions are a direct consequence of burning fossil fuels or some type of flammable material (coal, wood, etc).
碳排放通常是燃烧石油或其他燃料(煤炭和木料等)的直接结果。
A few years ago all factories changed from wood to coal causing further problems with pollution, the factories have been pushed out of the city limits because of this issue.
几年前，所用的燃料从木材变成了煤炭，造成了进一步的污染问题，结果砖厂被赶出了市区。
Humanity's main fuel for eons was wood, which has a carbon-to-hydrogen ratio of 10 to 1 when burned; by comparison, that ratio is 2 to 1 for coal and 1 to 2 for oil.
千万年以来，人类的主要燃料是木头，燃烧木头的过程中，碳和氢的比率是10比1。相比较而言，煤在燃烧过程中这个比率是2比1，而石油的比率则是1比2。
Soot is released from burning fossil fuels (particularly diesel and coal), wood, and other biofuels.
煤灰有化石燃料(特别是柴油和煤碳)、木材和其他生物燃料燃烧所释放的。
The shells, which have a thermal value similar to that of wood, will be mixed with the coal in a 1-to-33 ratio.
这些豆壳与木头的热能价值相近，将以1：33的比例与煤混合。
Around 3 billion people cook and heat their homes using open fires and leaky stoves burning biomass (wood, animal dung and crop waste) and coal.
约有30亿人通过使用燃烧生物质(木柴、动物粪便、作物废弃物)和煤炭的明火以及开放式炉灶进行烹调和取暖。
The same women would appear sometimes at the wood-frame house, where her family of 11 lived in three rooms, burning coal-oil and hauling water from the spring, and offer them second-hand clothes.
那些女士们有时会出现在她那木头房子里——她的11个家人挤在三个房间里，靠烧煤油和汲取泉水生活，为他们提供的二手衣服。
Wood, coal and oil are different kinds of fuel.
木头、煤炭和石油是不同类型的燃料。
Wood, coal, oil and gas are different forms of fuel.
木柴，煤炭，油和煤气是各种不同的燃料。
These are made from coal, glass, petroleum, milk and wood.
它们是由煤、玻璃、石油、牛奶和木材制成的。
These are made from coal, glass, petroleum, milk and wood.
它们是由煤、玻璃、石油、牛奶和木材制成的。
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