Enhanced security measures since then, combined with a rise in airline travel due to the improving economy and low oil prices, have resulted in long waits at major airports such as Chicago's O'Hare International.
自那以后实施的加强安全措施，加上由于经济改善和油价低迷导致的航空旅行增加，使得像芝加哥奥黑尔国际机场这样的主要机场出现了长时间的排队现象。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。