美国虽然没有像中国那样有涉及生活、治安、劳动、卫生等多方面的居委会或街道委员会;但在房屋分散坐落的居住区里有一些居民会自发组织起来,执行一种叫做neighborhood watch的行动计划。他们在街头树立起警示牌,告诫心存不良者:本地区居民如发现形迹可疑分子或可疑活动将立即报告警察局。他们的英 Although the United States does not have neighborhood committees or street committees involving many aspects of life, security, labor, and health as in China, some residents in the residential areas where houses are scattered are organized spontaneously to carry out an action plan called neighborhood watch. . They set up warning signs on the streets to warn those with bad intentions: Residents of the area who find suspicious elements or suspicious activities will immediately report to the police station. Their English