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。
When Boeing 707 jets came along, airlines went deep into debt to buy them and expand their routes.
商业航线飞行员斯图尔特·罗斯说。 他驾驶波音767客机，每周往返于地中海两次，但他还嫌不够刺激。
"I've always loved flying, " says Stuart Ross, a commercial airline pilot for whom flying a 767 to the Mediterranean and back a couple of times a week just isn't enough of a thrill.
不久前，一架轻型客机偏离了航线。
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