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.

但许多客户却抱怨说，对于依赖长途运输的大宗商品来说，如煤炭、化学制品和粮食，由于公路运输花费太大，这样铁路公司就会“掐他们的脖子”。

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.

6. 但许多托运人抱怨，对于长距离运输的大宗商品，如煤炭、化学品和粮食，卡车运输成本太高，因此铁路扼住了它们的咽喉。