changeless
adjective literary uk/ˈtʃeɪndʒ.ləs/ us/ˈtʃeɪndʒ.ləs/
不变的；无变化的；永恒的
used to describe something that never seems to change
Surrounded by this changeless landscape, one can imagine the world as it was many thousands of years ago. 置身于这永恒不变的风景之中，可以想象出好几千年前世界是什么样子的。
Synonyms: immutable unchanging
Opposites: inconstant mutable