"User charges" means a charge imposed on airlines for the provision of airport, air navigation, or aviation security facilities or services including related services and facilities.

“使用费”，指提供机场、空中导航或航空保安设施或服务，包括相关服务和设施，而向空运企业收取的费用。

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Exclude airport tax, fuel surcharge, security charge, Cart fee, All transfer fee.

不包括机场税，燃油附加费，保安费，购物车费用，所有转让费。

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He is the security agent in charge at the airport.

他是机场保安部的负责人。

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Shortly after the attacks, Lee Longmire -- who worked under Canavan as the head of civil aviation security operations -- in charge of airport operations -- was transferred from that job to the head of the FAA's aviation security, policy and planning.

CNN: Security breaches vary widely at U.S. airports

Barack Obama takes charge this week at a time when many new airport-security measures are being introduced.

ECONOMIST: Business travel

The new Executive VP is in charge of flight operations, technical operations, operations control center, safety, security, airport customer service and Delta Global Services.

FORBES: Magazine Article