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。
It is not yet clear how much more effective airline security has become - but the lines are obvious.
目前尚不清楚航空安全措施究竟变得更加有效了多少——但排队的长龙是显而易见的。
Part of the issue is that the government did not anticipate the steep increase in airline travel, so the TSA is now rushing to get new screeners on the line.
其中一部分问题是政府没有预料到航空旅行的大幅增长，因此运输安全管理局现在正仓促地将新的安检人员部署到一线。
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。