(1)〈英〉现实用益权；即时用益权
即期实现的用益权，受1535年《用益法》〔Statute of Uses〕调整。
(→present enjoyment)

(2)新用途
指对原有工具的新用法。

• air
• airbill
• air carrier
• air corporations
• Air Council
• aircraft
• Air Force
• air law
• airline
• airline bumping
• Airline Deregulation Act
• air piracy
• air rights
• airspace
• air traffic rules
• Air Transport Adjustment Board
• air transportation
• Air Transport Licensing Board
• air travel insurance
• airway
• airway bill
• aisement
• aisiamentum
• aisle
• aisne