At present, the landing charges for Heathrow and Gatwick are fixed by the Civil Aviation Authority, which juggles desire for low prices with the need for BAA to invest and make money.

• 现在，希思罗和盖特维克机场的起降费用是由民航管理局核定的，平衡了对低价的渴望以及BAA对于投资和盈利的需求。