China's airlines have more than 800 Boeing airplanes in service.
中国航空公司目前运营的波音飞机超过800架。
When Boeing 707 jets came along, airlines went deep into debt to buy them and expand their routes.
自从有了波音707大型喷气式客机,航空公司为了引进这种机型,往往负债累累,只好增加航线。
Southwest Airlines is inspecting 79 Boeing 737 aircraft after a hole blew out in one of their planes on Friday.
周五,在他们的一架飞机空中出现裂口后,,西南航空检查了它拥有的79架波音737飞机。
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