1.
One way to get rid of the polluted air is to build a car that does not pollute.
消除污染的方法便是制造一种无污染的汽车。
2.
"Clean:Free from dirt, stain, or impurities; unsoiled."
干净的:无灰尘、污迹或杂质的;未污染的.
3.
free of weeds, contamination, pollution, etc
无杂草、 传染、 污染等.
4.
It is necessary to remove the dirt and pathogenic bacteria, to avoid contaminating germ free or sanitizing articles and to avoid infection and cross-infection.
答：除去手上的污垢及污染的致病菌，避免污染无菌物品或清洁物品，避免感染和交叉感染。
5.
Study on Detoxification of Dioxins Contaminated Sediment by Pyrolysis;
二噁英类污染底泥的热解无害化研究
6.
The Reactive Power Optimazation on SVC with Harmonic Pollution;
基于SVC考虑谐波污染的无功优化
7.
Study on Amends Limit on No－ fault Environmental Harms Caused by Pollution;
无过错环境污染损害的赔偿限度研究
8.
No Pollution Agriculture Product s Prospect and Measure;
发展无污染安全农产品的前景和对策
9.
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
10.
Study on the detoxification of Cr(Ⅵ)-contaminated soil by pyrolysis
Cr(Ⅵ)污染土壤的热解还原无害化处理
11.
The Contaminations Control during Injection Production and Sterility Test;
无菌注射剂生产中污染的控制及无菌检查
12.
Environmental pollution transcends administrative boundaries.
环境污染，无分疆界。
13.
the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors.
一种玷污或污染的行为；包括（或有意或无意）有害物质。
14.
Scenic, unpolluted, and prosperous: who could ask for anything more?
风景优美，无污染而且繁荣：还有什么可求的呢？
15.
Among these four islands, there can be no doubt that South Island is the least polluted and most spectacularly scenic of them all.
四个岛中，南岛无疑是污染最少且风景最秀丽的。
16.
Reducing the Environmental Pollution for Livestock with New Non─poison Medicine in Australia
澳大利亚──无毒新药减少了牲畜对环境的污染
17.
Study on the Non-Pollution Bleaching of Steam-Exploded Pulps from Non-Wood Fibers;
非木材汽蒸爆破浆无污染漂白方法的研究
18.
Study of the Relationship between Economic Growth and Environmental Pollution in Wuxi City;
无锡市经济增长与环境污染的关系研究