Crossroads are the main distributing centre of traffic and the cause for the urban crowding.
交叉口是城市交通的主要集散地，是交通拥挤产生的主要环节。
Urban crowding under unsanitary conditions also creates ideal conditions for explosive epidemics of well-known diseases, such as yellow fever and dengue.
城市人满为患，卫生条件恶劣，也为一些众所周知的疾病，例如黄热病和登革热的爆炸性流行创造了理想条件。
Population expansion in modern cities caused the problem as the house crowding, the traffic jam, and urban environment worsening and so on.
现代城市由于人口过度膨胀而导致的住房拥挤、交通堵塞、城市环境恶化等现象使城市人们向往更富自然、生态气息的绿色空间。
Population expansion in modern cities caused the problem as the house crowding, the traffic jam, and urban environment worsening and so on.
现代城市由于人口过度膨胀而导致的住房拥挤、交通堵塞、城市环境恶化等现象使城市人们向往更富自然、生态气息的绿色空间。
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