And the business is more complicated: you need to offer meals and refreshments (even if you sell them to passengers), provide on-board entertainment, have extra crew on board and keep crew overseas.
而且业务也更复杂：你得供应食物和饮料(即便把它们卖给乘客)，在飞机上提供娱乐，拥有更多机组人员以及雇用海外机组人员。
And the business is more complicated: you need to offer meals and refreshments (even if you sell them to passengers), provide on-board entertainment, have extra crew on board and keep crew overseas.
而且业务也更复杂：你得供应食物和饮料(即便把它们卖给乘客)，在飞机上提供娱乐，拥有更多机组人员以及雇用海外机组人员。
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