while increasing promotion efforts
Because of the international financial crisis intensified, while airlines "thin" international routes, while increasing promotion efforts.
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while increasing promotion efforts
同时加大推广力度
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Because of the international financial crisis intensified, while airlines "thin" international routes, while increasing promotion efforts.
由于国际金融危机的影响加剧，各家航空公司一边“瘦身”国际航线，一边加大促销力度。
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