不清洁的汽油会损害汽车发动机。
他们用并不清洁的塑料袋带走剩饭，然后与家人分享。
They put the food in dirty plastic bags and share with family.
煤不仅仅是化石燃料中二氧化碳的最大释放源，更是最不清洁的能源。
Coal is not only the largest fossil fuel reservoir of carbon dioxide, it is the dirtiest fuel.
但如果天然气的生产过程是不清洁的，那么它的成本低廉就无从谈起。
But if natural gas is not produced cleanly, it will not prove to be so cheap, either.
旧的或不清洁的木桶，造成了一种叫做酒香酵母菌的酵母菌株，所散发的气味。
Old or dirty barrels contain yeast strain call win yeast which produces this odor.
另外一个重要原因是在全国范围内强制取缔不清洁的柴油卡车以及扩大零排放车辆的使用。
A statewide crackdown on dirty diesel lorries and a push to expand use of zero-emission vehicles are also a big part of the story.
此举意在给褐煤决定性的一击。 褐煤是这里最不清洁的燃料，也是德国电力的主要来源。
The tax was intended to deliver a decisive blow against lignite or brown coal, the dirtiest fuel around and Germany's main source of electricity.
这包括国会计划的将低价但不清洁的燃料换成清洁但高价的燃料，还包括建造许多昂贵的新电站来取代污染环境的旧电站。
It will involve swapping cheap but dirty fuels for cleaner but dearer ones, as Congress intends, as well as building lots of expensive new power plants to replace older, more polluting ones.
他们看着我们说，我们拥有大量的煤炭储备，有着许多不清洁的工业，我们需要通过经济增长使人们摆脱贫困，为什么是我们？
They looked to us and said, 'Why would we, with a huge stock pile of coal and lots of different dirty industries and the need to lift people out of poverty through economic growth?
公共场所的不清洁的行为，例如涂鸦，或许会对不良行为有推波助澜的作用。然而，当牵扯到个人清洁卫生的时候，结论却恰好相反。
PUBLIC displays of untidiness, such as graffiti, may promote bad behaviour (see article), but when it comes to personal cleanliness the opposite appears to be true.
澳大利亚温室气体排量占世界总排量的1.5%，主要原因是澳大利亚约80%的电能通过燃烧煤炭产生，这是最不清洁的发电方式之一。
Australia emits 1.5% of the world's greenhouse gases primarily because it generates about 80% of its electricity from coal, one of the dirtiest sources of power.
科学家们对一种称为“气化”的处理过程进行了改进，这个过程以前就已应用于清理发电或可再生燃料制造中所使用的不清洁原料。
Scientists have adapted a process called "gasification" which is already used to clean up dirty materials before they are used to generate electricity or to make renewable fuels.
但尽管不干净的键盘会危害健康，该杂志对四千人开展的一项调查显示，有10%的人从来不清洁电脑键盘，20%的人从不清洁鼠标。
But despite the health hazard of a dirty keyboard, a survey of 4, 000 people by the magazine found one in 10 people ever cleaned their keyboard while another two in 10 never cleaned their mouse.
每天，4000名儿童死于不清洁水源和缺乏卫生设施引起的疾病。
Every day, 4, 000 children die as a result of diseases related to dirty water and poor sanitation.
你永远不收拾自己的房间，你真懒惰，又永远不清洁鞋子，还要我叫你去洗澡。
You never tidy your room, you're lazy, you never clean your shoes and I have to tell you to take a bath.
很多疾病是由于不清洁而引起的。
这个地区疾病的主要原因是水不清洁。
这玻璃杯中的水不清洁。
工作场所不清洁，除会造成精度错误外，也会增加铸铁平板的磨损。
Work sites do not clean, in addition to the wrong can cause precision, also can add iron plate of wear and tear.
但尽管不干净的键盘会危害健康，该杂志对四千人开展的一项调查显示，有10%的人从来不清洁电脑键盘，20%的人从不清洁鼠标。
But despite the health hazard of a dirty keyboard, a survey of 4,000 people by the magazine found one in 10 people ever cleaned their keyboard while another two in 10 never cleaned their mouse.
另外，传热管原始内表面粗糙不平整、不清洁加速了腐蚀与成垢，原材料的非金属夹杂物存在也降低材料抗腐蚀的能力。
In addition, the roughness and uncleanness of the original surface of heat transfer tubes accelerated corrosion and scale. Non-metallic impurities of the tube material reduced corrosion-r...
另外，传热管原始内表面粗糙不平整、不清洁加速了腐蚀与成垢，原材料的非金属夹杂物存在也降低材料抗腐蚀的能力。
In addition, the roughness and uncleanness of the original surface of heat transfer tubes accelerated corrosion and scale. Non-metallic impurities of the tube material reduced corrosion-r...
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