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来源:雅诚德英语网
Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations.
如果没有升级和新的承载力,桥梁、道路和电力系统就无法应对不断增长的人口数量。
Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations.
如果没有升级和新的承载力,桥梁、道路和电力系统就无法应对不断增长的人口数量。