1.to travel by rail 乘火车
例句：I'd chosen to travel by rail not for any anoraky reasons, but because I have always found a train, particularly a slow train, a good way of taking the pulse of a place.
我选择坐火车旅行因为我发现坐火车，尤其是慢车是观察一个地方很好的方式。
rail travel/services/fares 铁路旅行/服务/费用
a rail link/network 铁路连接；铁路网

2.invest in/on (把资金)投入
例句：The government has invested heavily in public transport.
政府已对公共交通投入了大量资金。

3.step up 增加,提高(数量、速度等)
例句：He has stepped up his training to prepare for the race.
他为准备那场赛跑加强了训练。

4.a striking feature 显着的特征
例句：A striking feature of the report is new research that shows that countries could double their per capita incomes by improving the quality of their legal systems and combating corruption.
报告的一个突出特点是以新的研究成果证明国家通过改进法律制度的质量和反腐败可以把人均收入提高一倍。