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.

youdao

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.

youdao