考研It is not yet clear how much more effective airline security has become - but the lines are obvious.

目前还不清楚航空公司的安全措施有多有效，但界线是显而易见的。

四级Soon airline tickets, hotel reservations and even cars and homes could be purchased online.

很快，机票、酒店预订，甚至汽车和房屋都可以在网上购买。

考研It is not yet clear how much more effective airline security has become—but the lines are obvious.

目前还不清楚航空公司的安全措施有多有效，但界线是显而易见的。

考研Enhanced security measures since then, combined with a rise in airline travel due to the improving Chicago’s O’Hare International.

此后加强了安全措施，再加上芝加哥奥黑尔国际机场（O'Hare International）的改善，航空旅行量增加。

高考Inventors have been trying to make flying cars since the 1930s, according to Robert Mann, an airline industry expert.

航空业专家罗伯特·曼（Robert Mann）表示，自20世纪30年代以来，发明家一直在尝试制造飞行汽车。

高考Many airlines now allow passengers to print their boarding passes online to save their valuable time.

许多航空公司现在允许乘客在线打印登机牌，以节省宝贵的时间。

考研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.

问题的一部分是政府没有预料到航空旅行的急剧增加，所以TSA现在正急于让新的安检人员上线。

考研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.

问题的一部分是政府没有预料到航空旅行的急剧增加，所以TSA现在正急于让新的安检人员上线。

考研This trend ,which we believe is still in its infancy, effectively began with retailers and travel providers such as airlines and hotels and will no doubt go further.

我们认为，这一趋势仍处于初级阶段，实际上是从零售商和旅行社（如航空公司和酒店）开始的，毫无疑问，这一趋势将进一步发展。

考研Another factor may be that more people are trying to overpack their carry-on bags to avoid checked-baggage fees, though the airlines strongly dispute this.

另一个因素可能是，越来越多的人试图对随身行李进行过度包装，以避免托运行李费，尽管航空公司对此表示强烈质疑。

考研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.

此后加强的安全措施，加上经济好转和低油价导致航空旅行增加，导致芝加哥奥黑尔国际机场等主要机场等待时间过长。