求翻译：西南航能够连续三十一年保持盈利，能够从无到有，从地方公司发展到美国第三大航空公司，简单的低成本经营模式已无法做出解释，毋庸置疑，西南航的员工和特有的公司文化才是其成功的灵魂。是什么意思？

Southwest Airlines to thirty-one years in a row to maintain profitability, to scratch, from the development of local companies to the third-largest U.S. airline, has been unable to explain a simple, low-cost business model, without a doubt, the employees of Southwest Airlines and unique the company

Southwest Airlines will be able to maintain continuous 31 to be able to profit from, the local company development, from the United States for the first 3 major airlines, the simple, low-cost business model has been able to explain that there is no doubt that Southwest Airlines employees and unique

The southwest navigation can the continual 31 year maintenance profit, be able to grow out of nothing, from the place corporate growth to the US third big airline, the simple low cost management pattern has been unable to make the explanation, without a doubt, the southwest navigation staff and the

Southwest Airlines to maintain profitability for 31 consecutive years, from scratch, from the local development of the company to the United States's third largest airline, a simple low-cost business model could not explain, there is no doubt that Southwest Airlines ' employees, and unique company c

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