n.防止污染
The Trent River Authority at least is on the side of depollution. 至少特棱特河川当局是赞成防止污染的。
Depollution and Clean the Water in American 美国人的治污洁水法
depollution of tannery waste water 制革废水处理法
The Tree Varieties Choosing of Depollution and Virescence 防污绿化与抗污吸污树种的选择
Air depollution technology and sustainable development 消除污染技术和可持续发展
