求翻译：在欧洲低成本航空市场发展的初期，瑞安航空就成了市场的领导者。瑞安航空的成本要比欧洲航空业平均成本低30%，当瑞安航空的飞机只要坐够一半乘客就能获利时，它的竞争对手们却要有75%的客座率才能够勉强弥补成本。在1990年，瑞安航空运载的旅客数还不到100万人，但在2001年时就达到了900万人，在2005年更是突破了3500万人次，而平均每名乘客只要花费53美元.虽然到2007年为止瑞安航空在整个欧洲航运市场所占份额还不到6%， 但年平均利润率却超过20%是什么意思？

In the early development of the European low-cost airline market , Ryanair has become the market leader.

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In the European low cost aviation market development initial period, the Rui-an aviation has become the market leader.The Rui-an aviation cost must compared to the European Aviation industry average cost low 30%, when Rui-an aviation airplane when the seat suffices a half passenger can make a profit

Early in the development of low cost airline market in Europe, Ryanair has become the market leader. Ryanair's costs are lower than the average costs of the aviation industry in Europe of 30%, when the Ryanair plane sat halfway through when passengers will be able to profit, its rivals are 75% of lo

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