提示：点击例句中的单词，就可以看到词义解释

Kutcher tells a story about the entrepreneurs who built the railroads .

库彻讲了一个关于修建铁路的创业者的故事。

Corporations in the developing world will need to borrow to keep building airports , railroads , and factories .

新兴市场企业需要借入资金来建设机场、铁路和工厂。

Railroads are adding cars to haul the rising output of many industries .

由于许多行业产出增多，铁路方面也在增加运力。

Berkshire owns everything from railroads to a company that makes running shoes .

伯克希尔公司业务规模庞大，拥有的资产从跑鞋制造公司到铁路不一而足。

My grandfather had made a fortune in railroads .

我祖父在铁路系统赚了大钱。