Principles should be enduring, yet able to accommodate changes.

原则应该具有长期适用性，不过还应该能够包含变更。

youdao

Service and duty are not just the guiding principles of yesteryear; they have an enduring value which spans the generations.

服务与责任不只是昔日的一种指导原则，而是永远传承的一种永恒价值。

youdao

Service and duty are not just the guiding principles of yesteryear. They have an enduring value which spans the generations.

为国家效忠和服务这不仅仅是过去的坚持和信念，新一代的人也同样体会着其重要的意义。

youdao

It said it was "unconvinced" by the arguments for introducing fixed term Parliaments, claiming the bill owed "more to short term considerations than to a mature assessment of enduring constitutional principles or sustained public demand".

BBC: Fixed-term Parliaments Bill part two