Supporters of the new supersystems argue that these mergers will allow for substantial cost reductions and better coordinated service. Any threat of monopoly, they argue, is removed by fierce competition from trucks.But many shippers complain that for heavy bulk commodities traveling long distances, such as coal, chemicals, and grain, trucking is too costly and the railroads therefore have them by the throat.

　　参考译文

　　新超·级系统的支持者认为，这些合并将大幅降低成本，并提供更好的协调服务。他们认为任何垄断的威胁都会被公路运输的激烈竞争消除。但是，许多发货人抱怨说，对于长途运输的大宗商品来说，如煤炭、化学制品和粮食，公路运输太昂贵了，因此铁路公司就会“扼住他们的咽喉”。