1.
soiled with dirt or soot.
被污垢或者煤烟污染。
2.
An Analysis of Legislation on Controlling the Pollution of Oil Smoke Exhausted by Catering Industry
城市饮食业油烟污染防治的立法研究
3.
health effects of smoke-dust pollution
烟尘污染对健康的影响
4.
The main pollution sources include: slag, sewage water, smoke, and tail gas.
主要污染物有矿渣，污水，烟气、尾气等。
5.
The factory emitted black smoke from its chimneys, which polluted the air around
这家工厂的烟囱排放黑烟，污染了周围的空气。
6.
The smoke issuing from the chimneys is polluting the air of this zone.
从烟囱里冒出的烟正在污染这个地区的空气。
7.
A Study of the Indoor Air Organic Pollution Affected by Environment Tobacco Smoke;
环境烟草烟气对室内空气有机污染影响的研究
8.
Characteristics of Emissions of Air Pollutants from Environmental Tobacco Smoke;
环境烟草烟雾引起的室内空气污染的定量研究
9.
Investigation on Air Pollution and Smoking Control Status in Non-smoking Places of Shanghai City
上海市禁烟场所空气污染状况及禁烟情况调查
10.
But diesel and petrol fumes have a mixture of pollutants.
但是，柴油和汽油烟味混合也产生污染。
11.
Is the air in this area still being polluted by smog?
这个地区的空气还在受烟雾污染吗？
12.
These gases form polluted air, or smog.
而这些气体就会形成污染空气或烟雾。
13.
air pollution by a mixture of smoke and fog.
烟和雾相混合对空气进行污染。
14.
We must color=# cc0066> abate the smoke nuisance in our big cities.
我们必须消除大城市里烟尘污染。
15.
They also cannot pollute the air with clouds of smoke and dirt.
它们也不能用成团的烟尘污染空气。
16.
TECHNICAL MEASURES FOR CONTROLLING SMOKE POLLUTION BY AERATION IN GAS MAKING SECTION
造气吹风气烟尘污染治理的技术措施
17.
Pollutant-diffusion function produced by chimney and its height of temperature inversion;
烟囱和逆温高度对污染物扩散的作用
18.
Experimental Study on Modifying Method of Anthracite for Micro-Polluted Water Treatment
处理微污染水的改性无烟煤制备工艺