It's true that as people in developing nations move from the countryside to the city, the shift may reduce the pressure on land, which could, in turn, be good for the environment.
的确，随着发展中国家的人们从农村搬到城市，这种转移可能会减少对土地的压力，这反过来可能有利于环境。
2
During the dry periods that are common phenomena along the desert margins, the pressure on the land is often far in excess of its diminished capacity, and desertification results.
在沙漠边缘地区常有的旱季，土地所受的压力往往远超其被削弱的承受能力，沙漠化因此发生。
3
However, pressure will grow on finite resources of land, energy and water.