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技能力，桥梁、道路和电力系统就无法应对不断增长的人口数量。
2
Despite all the reliability upgrades, with 70-mile winds, the trees will not just sway but come down on poles and wires.
尽管所有的可靠性升级，在70迈的大风中，树木可不会光摇摆，而是直接砸到电杆和线路上。
3
The G-222 aircraft, which were built between 1977 and 1985, are receiving avionics upgrades, while two will also be given sound-proof, VIP transport modules.