西欧和北美国家的城市居民,在喧嚣和严重空气污染的搅扰下,相继移居远郊。在林区、山麓或海滨建造起幢幢鳞次栉比的住宅。清灰色石板镶贴的墙面,衬上绛紫色石板覆盖的屋顶,房前屋后穿插着用彩色石板铺砌的林荫小径,与之金碧辉煌的 Urban residents in Western European and North American countries have migrated to the outer suburbs under the turbulence of severe air pollution. Build row upon row of dwellings in forests, mountains or seashores. The grey slate-inlaid wall is lined with a slate-covered roof, and a shaded paved road leads through the front of the house.