Two US airlines, United and Continental, have announced their merger in a deal that will create the world's largest airline.

美国两家航空公司，美联航和大陆航空公司宣布了他们的合并协议，这将产生世界最大的航空公司。

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In Washington, security officials suggested that the bombers had targeted United, American and Continental airlines.

在华盛顿，安全官员认为爆炸者的目标是联合航空、美国航空和大陆航空。

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In May, Continental and United airlines announced a definitive merger plan, making it the world's biggest air carrier -- a title previously held by Delta.

五月，Continental航空公司和United航空公司宣布了合并计划，取代Delta成为世界上最大的航空运输商。

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's United Airlines and Continental Airlines.

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The United spokeswoman said it hasn't substituted larger aircraft on the affected routes because those planes are being used on other parts of the route network of the Chicago-based carrier, which was formed by the 2010 merger of United Airlines and Continental Airlines.

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In addition, United is now managing award seat inventory on United and former Continental Airlines planes together after the merger of the two carriers.

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