Using the train network is a viable option, especially if journeying city-to-city within Europe and places like Japan where the infrastructure is good and the trains are reliable.
使用火车网络是很可行的，特别是欧洲内部的城市之间旅行或者是像日本那样基础建设优良和火车可靠的地方。
2
Migrant workers move from citytocity in search of work.
农民工为了寻找工作从一个城市移居到另一个城市。
3
Many of these factors vary from citytocity and region to region.