permanent state

例句：

1. 1.The company's commitment to sustainability is permanent.
   该公司对可持续的承诺是永久的。
2. 2.The river flows through the town for centuries, a permanence that has been celebrated by locals.
   这条河流穿过这个城镇几个世纪，这种永恒被当地人所庆祝。
3. 3.The decision to relocate was made permanent with the new building's completion.
   搬迁的决定在新的建筑物完工后被永久性地确定下来。