他还想建造一条从波特兰市出发，横穿加拿大、美国，一直延伸到太平洋的绿化地带。
He also wants to build a green belt from Portland, across Canada and the United States, all the way back to the Pacific Ocean.
如果世界控制炭的排放量，美国一定不能只把自家行为打扫干净，也要帮助中国绿化其经济增长。
If the world is to contain its carbon emissions, America must not only clean up its own act but also help China to green its economic growth.
美国林务局研究员做的两项最新研究仔细调查了费城、巴尔的摩和俄亥俄州扬斯敦的市区绿化情况。
Two new studies, led by US Forest Service researchers, took a closer look at urban green space in Philadelphia, Baltimore and Youngstown, Ohio.
EM-60/70系列草坪修整割草机是引进美国技术改进的，主要适用于绿化、庄园、高尔夫球场等大型草坪的修剪，也可进行牧草的收割等作业。
EM-60/70estate movers have been improved by American technology and they are suitable for such as afforestation , manor , golf links, also able to reap herbage.
由于一种低能耗生产工艺的出现，硅谷发现普普通通的砖头在未来将大有利可图，而该工艺将使美国科技之都实现绿化。
Silicon Valley sees a profitable future in the humble brick thanks to a low-energy production process that illustrates the greening of the U. S. technology capital.
由于一种低能耗生产工艺的出现，硅谷发现普普通通的砖头在未来将大有利可图，而该工艺将使美国科技之都实现绿化。
Silicon Valley sees a profitable future in the humble brick thanks to a low-energy production process that illustrates the greening of the U. S. technology capital.
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