By the end of 1999, the economy had grown continuously since March 1991, the longest peacetime economic expansion in history.
By the end of 1999, the economy had grown continuously since March 1991, the longest peacetime economic expansion in history.
自1991年3月至1999年底，美国经济一直保持增长，从而形成有史以来最长的、和平环境下的经济增长期。