A perpetual annuity pays out a fixed amount of money annually, without end.
永续年金每年支付固定金额，没有终止日期。
The invention of the perpetuity of copyright has been a double-edged sword for artists.
版权的永久性对艺术家来说是一把双刃剑。
The company's stock is a perpetual favorite among investors seeking steady returns.
这家公司的股票一直是寻求稳定回报的投资者的长期选择。
The perpetuity of peace is a dream that many nations strive for.
永久和平是许多国家追求的理想。
The perpetuity clause in the will ensures that the estate remains within the family forever.
遗嘱中的永续条款确保财产永远留在家族内。
The perpetuity of nature is a testament to the resilience of life on Earth.
自然的永恒证明了地球生命的顽强。
The scientist proposed a perpetual motion machine, but it was ultimately debunked as impossible.
科学家提出了永动机的概念，但最终被证明是不可能实现的。
The perpetuity of love is a central theme in many romantic novels.
爱情的永恒是许多浪漫小说的核心主题。
The perpetuity of the universe fascinates scientists and philosophers alike.
宇宙的永恒让科学家和哲学家都感到着迷。
In real estate, a perpetual lease is one where the tenant has an indefinite right to occupy the property.
在房地产中，无限期租约是指租户有权无限期占用物业的租赁协议。
Perpetual bonds are fixed-income securities with no maturity date and are not redeemable but pay a steady stream of interest in perpetuity.