The index of railway transportation cost is an important aspect to study the relativity between the transportation tariff and the commodity price.
运输成本费用指数是研究运价与物价相关性的一个重要方面。
Locomotive is one of the important movable transportation resources in railway enterprise, which contributes a lot to the variable cost of railway transportation operations.
机车是铁路运输企业十分重要的可移动运输资源，铁路可变成本的很大部分就是由机车运用产生的。
Because of the high cost of railway transportation, we prefer sea transportation.
铁路运输费用太高，我们愿意走海运。
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