浅谈大气污染
TOWNSHIP ENTERPRISES AND SCIENCE TECHNOLOGY（2004）
Abstract
当我们从地面仰望天空,发现天空往往是灰蒙蒙的,即使在天气晴朗的日子,也很难看到鲜艳的蔚蓝色光彩.蓝蓝的天空中漂浮着朵朵白云的画面,只能偶尔可见.这是大气污染所致,人类造成的污染放出的"黄龙"、"黑龙"、"红龙"、"白龙"等把蓝天搞得乌烟瘴气.
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