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经营效率和服务质量因不同经营者和不同国家差别极大。如果所有经营者都把他们的效率提高到实际最高水平,全球每年将节省780亿美元,且服务水平会大大提高。
Operating efficiency and quality of service varies greatly by operator and country. If all operators raise their efficiency to the highest level, the global economy will save 78 billion U.S. dollars every year, and the service level will be greatly improved.