过境费问题仍是两国间争议已久未解决的问题之一。
The question of transit fees is one of the most contentious unresolved issues between the two countries.
还有恼人的价格问题，如伊朗的天然气价格，以及巴基斯坦的过境费。
There are nettlesome issues of pricing as well, with Iran on gas price and with Pakistan on transit costs.
俄罗斯拒绝为维持输气管压力而提供天然气(技术性天然气)。俄罗斯表示，它为这类燃料付给乌克兰了一笔过境费。
Russia refuses to provide gas for technical purposes, saying it pays Ukraine a transit fee for such fuel.
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