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美国科学家发现了一个理论,叫“破窗理论”。这个理论可以简略地表述为:如果一个建筑物窗户上的玻璃被打破,而这扇窗户又没能及时维修,别人就可能受
American scientists discovered a theory called “broken window theory”. This theory can be briefly stated as follows: If glass in a building window is broken and the window is not repaired promptly, others may be affected