名詞 perpetuity:

1. the property of being perpetual (seemingly ceaseless)
   同義詞：sempiternity

1. These lands were granted to our family in perpetuity.
   這些土地依法永遠(yuǎn)歸我們家族所有。
2. The site of the memorial is granted in perpetuity to Canada.
   紀(jì)念館址已選定在加拿大作為永久的紀(jì)念。

per.pe.tu.i.ty

n.（名詞）
【復(fù)數(shù)】 per.pe.tu.i.ties
The quality or condition of being perpetual:
永恒，永遠(yuǎn)，長存：成為永恒的特性或狀態(tài)：
例句：
.The perpetuity of the Church was an article of faith.(Morris L. West)
.教會的永恒是一種信仰的契約.(莫里斯L.韋斯特)

Time without end; eternity.
無絕期，無盡期
Law
【法律】
The condition of an estate that is limited so as to be inalienable either perpetually or longer than the period determined by law.
永久所有權(quán)，永久不得轉(zhuǎn)讓權(quán)：房地產(chǎn)被限制以致于可永久地或比法律規(guī)定時間長的不得轉(zhuǎn)讓的狀態(tài)
An estate so limited.
永久擁有的房地產(chǎn)：這種限定的房地產(chǎn)
An annuity payable indefinitely.
終身年金：無期限地可獲得的年金或養(yǎng)老金

<習(xí)慣用語>in perpetuity
For an indefinite period of time; forever.
永遠(yuǎn)：持續(xù)一個無限期的時間段；永遠(yuǎn)