2012年全球航空公司除开机票以外的收入估计达到了361亿美元。
In 2012, airline revenue from sources other than tickets amounted to an estimated $36.1 billion worldwide.
收益是基于成本估计和潜在收入估计的。
The return is based on the cost estimate and the potential revenue estimates. 5.
2002年的一份研究表明一个具备本科学历的人一生的收入估计能比之具有高中文凭的人高出75%以上。
A study in 2002 found that someone with a bachelor's degree could expect to earn 75% more over a lifetime than someone with only a high-school diploma.
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