洪水淹没了河岸，冲坏了部分铁路干线。
The river flooded its banks washing away part of the main railway line .
这“三横”、“五纵”构成了中国铁路干线的主要骨架。
These lines form the basic framework of Chinese trunk railways.
社会经济效益评价是铁路干线路网规划及建设项目决策的重要前提和依据。
Socioeconomic benefit evaluation is the main precondition and foundation in railway project planning and decision.
社会经济效益评价是铁路干线路网规划及建设项目决策的重要前提和依据。
Socioeconomic benefit evaluation is the main precondition and foundation in railway project planning and decision.
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