航空公司抱怨说，私有化机场的降落费一直都在涨。
Airlines grouch that landing fees always rise at privatised airports.
Ryanai 仍旧致力于提供低票价以及让飞机停在降落费较低或不收取降落费的次级机场。
Ryanair is still committed to cheap fares and secondary airports where landing charges are low or non-existent.
航空公司不情愿阻止他们，因为机场运营管理商通常用免税产品和其它商品的销售额来抵充所收取的机场降落费。
Airlines are reluctant to stop them because airport operators often use sales of duty-free and other items to subsidise landing charges.
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