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.
它拥有发达的现代交通工具。
现代交通工具使得在几周内周游世界成为可能。
Modern transportation facilities make possible traveling throughout the world in a few weeks.
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