根据麦肯锡全球研究院的最新估计，到2030年世界各国需要将交通、电力、供水和电信系统投资从每年的2.5万亿增加到3.3万亿，才能为预期的经济增长提供支撑。
The world needs to increase investment in transportation, power, water, and telecom systems from $2.5 trillion a year to $3.3 trillion every year through 2030 just to support projected economic growth, according to new estimates from the McKinsey Global Institute.