However, in the opinion of the time management expert, this also is not particularly difficult problem.
不过，在时间管理专家看来，这也并不是特别难解决的问题。
Feng Xin: And why is railway transportation a particularly difficult problem?
冯欣：为什么铁路是特别突出的一块呢？
Feng Xin: And why is railway transportation a particularly difficult problem?
冯欣：为什么铁路是特别突出的一块呢？
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