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研究问题的背景介绍从20世纪80年代早期开始,邻近被称作土地使用不合意区(Locally Undesirable Land Uses,LULUs)的房屋所有者和土地所有者就认为,LULUs危害到人类的健康和安全。
BACKGROUND OF THE STUDY Background Beginning in the early 1980s, homeowners and landowners in neighboring neighborhoods known as Locally Undesirable Land Uses (LULUs) believe LULUs endanger human health and safety.