There has been much public discussion in recent years about the United States running out of farmland because of urban encroachment.
近年来常常有关于城市扩展而使美国农田减少的公众讨论。
Stopping the geographical spread of cities both protects productive land from further encroachment and keeps such land closer to the urban population.
停止城市的地理扩张，既保护了多产的土地被进一步侵占，同时也保持多产的土地靠近城市人口。
Stopping the geographical spread of cities both protects productive land from further encroachment and keeps such land closer to the urban population.
停止城市的地理扩张，既保护了多产的土地被进一步侵占，同时也保持多产的土地靠近城市人口。
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