形容词不变的，恒常的

1. 不变的：grouse 松鸡 | unchanging 不变的 | aristocratic 贵族的;贵族式的

1. 永不改变的；恒定的
Something that is unchanging always stays the same.

e.g. ...eternal and unchanging truths...
永恒不变的真理
e.g. The ground beneath us, however, appears solid and unchanging.
然而，我们脚下的地面却似乎是坚实而恒久不变的。

adj

1. showing little if any change

e.g. a static population

Synonym: staticstable

2. conforming to the same principles or course of action over time