In terms of ton-miles, railroads annually move more than 25% of the United States' freight and connect businesses with each other across the country and with markets overseas.
就运送货物的吨·英里数而言，铁路每年运送超过25%的美国货物，并将整个国家范围内的工商企业——乃至海外市场——都连接了起来。