能量通过点火柴燃烧释放出来。
The energy is released by combustion on the application of a match.
多环芳烃是由煤炭、柴油、石油和汽油的燃烧释放出来的，或者如烟草这样的有机物。
PAHs are chemicals released into the air from the burning of coal, diesel, oil and gas, or other organic substances such as tobacco.
它会随着燃烧释放大量煤烟和有害化学物质，因此许多西方国家已经不再钟情于它了。
It releases lots of soot and various noxious chemicals as it burns, and so has fallen out of favour in many Western countries.
二手烟包括“侧流烟”(烟草产品燃烧释放的烟)和“主流烟”(吸烟者呼出的烟)。
Secondhand smoke is the combination of "sidestream" smoke (the smoke given off by a burning tobacco product) and "mainstream" smoke (the smoke exhaled by a smoker).
预计到2050年，由于化石燃料燃烧释放的二氧化碳溶于海水，海水变酸，全球范围的珊瑚礁将急剧缩减。
2050 projected year when coral reefs worldwide will shrink because of increased ocean acidity as atmospheric carbon dioxide, from burning fossil fuels, dissolves in seawater.
颗粒的使用有利于环境，是一种低碳能源，即几乎所有燃烧释放的二氧化碳都能在植物生长中被回收。
The use of pellets benefits the environment, being a low-carbon energy, i. e. almost all the CO2 emitted in their burning is recovered on plant growth.
相比之下人类燃烧煤、石油等活动所释放的二氧化碳的量是少的。
The amount of carbon dioxide released by human activities such as burning coal and oil is small in comparison.
它的生长不像玉米那样需要很多肥料，但是他们燃烧甘蔗田时会释放大量的温室气体。
It doesn't require as much fertilizer as corn does to grow, but when they burn the sugar cane fields, that releases loads of greenhouse gases.
这些反应增加了不完全燃烧的可能性，更有可能释放未燃尽和光化学活性碳氢化合物到大气中。
These reactions increase the probability of incomplete combustion and are more likely to release uncombusted and photochemically active hydrocarbon compounds into the atmosphere.
最棒的是这一过程能够自我供能——钚被裂变破坏时释放能量，这一能量可以供给燃烧炉。
The best part is that the process can power itself—plutonium releases energy as it destroyed by fission, and that energy can power the burner.
燃烧甲烷产生二氧化碳，然后释放到大气中。
The burning of methane generates carbon dioxide that is released into the atmosphere.
所有易燃材料均含有在燃烧过程中释放的发火物质，使“去表皮化的”物质保持其“真正”的杯状形式。
All flammable materials contain phlogiston that is liberated in burning, leaving the "dephlogisticated" substance in its "true" calx form.
但公众依然为之担忧，因为没有关于二恶英排放的数据，这种有毒物质会在塑料和其他合成材料燃烧的时候被释放出来。
But it continues to raise concerns because there are no figures for dioxins - the toxins released during the burning of plastic and other synthetic materials.
如果不是这样，它们就会燃烧并释放有毒的辐射。
这点就抵消了天然气作为能源最重要的一个优点：与化石能源相比，燃烧更清洁，释放的二氧化碳更少。
This offsets natural gas's most important advantage as an energy source: it burns cleaner than other fossil fuels and releases lower carbon dioxide emissions.
此地图可以帮助科学家们了解人类燃烧化石燃料所释放的二氧化碳，有多少被全球的树木吸收贮存起来。
The map may help scientists build an inventory of how much of the carbon dioxide people release by burning fossil fuels gets stored by trees around the world.
为了防火，乙烯基建筑产品在燃烧之前很久就开始闷烧，释放有毒盐酸气体，从而威胁住户和消防员。
In case of fire, vinyl building products begin to smolder long before they burn, releasing toxic fumes of hydrochloric acid, and thereby threatening building occupants and firefighters.
我们人类无节制的活动，挖掘矿物燃料，燃烧并释放它们到大气中。
Digging up fossil fuels, burning it and releasing it in the atmosphere.
燃烧生物质能因可再生，被视为碳中性的，在燃烧过程中，其碳的释放是可以被吸收的。
Burning biomass is seen as "carbon neutral" as the material is regrown, allowing the carbon emitted during combustion to be reabsorbed.
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.
但是很清楚的是燃烧本身释放了大量的会导致气候变化的气体，二氧化碳。
But it is clear that they release prodigious quantities of climate-changing carbon dioxide when they happen.
与之相反，在煤炭的开采中甲烷释放要少的多；但燃烧煤炭所产生的CO2比燃烧天然气所释放的CO2多出2倍。
Coal, by contrast, is associated with a much smaller methane release during mining; but burning it produces about twice as much CO2 as burning natural gas.
核能与矿物燃料不同，完全没有碳元素，不会在燃烧时释放改变大气的二氧化碳。
Unlike such fossil fuels, which release climate-changing carbon dioxide when burnt, nuclear power is "carbon free".
大多数生物燃料顶多达到碳平衡，即他们生长时吸收的二氧化碳与被制成生物燃料和燃烧后释放的二氧化碳等量。
Most biofuels are at best carbon neutral, emitting as much carbon dioxide when they're produced and burned as the biofuel crops take in as they grow.
换一种表达方式：人类只可以燃烧和释放已知石油、天然气和煤储量的四分之一。
Put another way: humanity can only afford to burn and vent less than one quarter of known oil, natural gas and coal reserves.
这些燃烧过程同样释放化学物质如甲烷、氮氧化合物、挥发性的有机化合物和一氧化碳在光照下反应形成臭氧。
These same processes also release chemicals that combine in sunlight to form ozone: methane, nitrogen oxides, volatile organic compounds, and carbon monoxide.
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。
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。
Soot is released from burning fossil fuels (particularly diesel and coal), wood, and other biofuels.
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