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关注：1
2013-05-23 12:21
求翻译：现代铁路建设总体分为三级体系是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
现代铁路建设总体分为三级体系
问题补充： |
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2013-05-23 12:21:38
Construction of modern railway system in general is divided into three
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2013-05-23 12:23:18
modern railway building divided into 3 general-level system
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2013-05-23 12:24:58
The modern railroad construction overall divides into three levels of systems
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2013-05-23 12:26:38
Three levels the whole system of modern railway construction
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2013-05-23 12:28:18
Three levels the whole system of modern railway construction
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