我是说航空旅行可以比铁路还低廉。航空公司不仅要运营盈利，飞机折旧也要算成本。

来源: fouquets 于 2013-01-07 19:32:45 [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.