1·Railroad lines are regularly checked, in fact, and well maintained.
事实上，铁路线会受到定期检查，并且被很好地维护。
2·The large gains in grain acreage and the spread of railroad lines made western growers more than competitive with eastern growers.
耕种面积的大幅增加和铁路的扩展使得西部的农民比东部更有竞争力。
3·Soil mechanics and soil stabilization techniques have been used in the construction of footings for railroad lines as well as for other kinds of construction.
和在其他工程领域中一样，土力学和土壤稳定技术已应用于铁路路基施工中。
4·The railroad acted onCarnegie's suggestions and did build its own telegraph lines.
铁路局听从卡内基的建议，建起了自己的电报线路。
5·Shipping lines, airlines, trucking companies and railroad companies are all carriers.
海运公司、航空公司、卡车公司和铁路公司均为承运人。
6·You will notice that other important elements land on the lines too such as the end of the train pavilion and the railroad crossing lights to the right.
你会注意到还有一些重要元素恰好位于线上，比如火车站建筑的边缘和右面的火车信号灯。
7·The railroad divides into two lines here.
铁路在这分成两条。
8·Congress authorized two railroad companies to build lines.
国会授权两个铁路公司去修建铁路。
9·Of course, the railroad 5 lines made a routine 6 checkup and the police looked into the case.
当然，铁路方面作了例行检查，警察也参与了这件事。