由于人口的猛增或大量人口流动（现代交通工具使这种流动相对容易）造成的种种问题也会对社会造成新的压力。
Additional social stresses may also occur because of the population explosion or problems arising from mass migration movements—themselves made relatively easy nowadays by modern means of transport.
人口的猛增，或者大量的人口流动 如今，现代交通手段使得这种流动相对容易起来 产生的问题也会对社会造成新的压力。
Additional social stresses may also occur because of the population explosion or problems arising from mass migration movementsthemselves made relatively easy nowadays by modern means of transport 。
世界人口预计明年就将猛增至到70亿，给食品和水供应带来严重压力。
The world's population is forecast to balloon to 7 billion next year, putting a terrible strain on food and water supplies.
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