perpetuity [ˌpɜ:rpəˈtu:əti]

例句:

• The US Government gave the land to the tribe in perpetuity.
  美国政府将这块土地永久性划拨给该部族。
  
• They tend to pay a fixed dividend in perpetuity.
  来自WSJ
• Kennecott is responsible for the Flambeau site in perpetuity.
  来自SA
• The plots where they were buried were dedicated in perpetuity to the United States.
  埋葬他们的那几块墓地已永远奉献给了美国.
  
• The site of the memorial is granted in perpetuity to Canada.
  纪念馆址已选定在加拿大作为永久的纪念.
  
• He says they often are held there in perpetuity.
  来自VOA