在铁路线路三维场景中，存在着大量的对称物，如树木、亭子、栏杆等，大部分对称物都属于复杂地物。
There are a lot of symmetry objects in the railway 3d sight, such as tree, georgette, and balustrade and so on.
数据存储在本地，这样我还在飞机上时就可以搜索巴士和铁路线路。
The data is stored locally, so I can research bus and train routes while I am still on the airplane.
当BHP拒绝Forrest先生商业使用其铁路线的请求后，他自己在原线路旁边建造了一条铁路。
When BHP refused Mr Forrest's request for commercial access to its railway line, he built his own line next to it.
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