事实上，在2012~2016年间，美国土木工程师协会将美国年度基础设施投资缺口预测数提高了2210亿美元 — — 每年增加约550亿美元。
In fact, between 2012 and 2016, the ASCE increased its estimate of America’s annual infrastructure-investment gap by $221 billion – about $55 billion per year.