changeless

形容词 changeless:

1. not subject or susceptible to change or variation in form or quality or nature
   同义词：immutable
2. persistent in occurrence and unvarying in nature
   同义词：constant, invariant, unvarying
3. remaining the same for indefinitely long times
   同义词：unalterable

1. Nothing is changeless.
   没有一成不变的东西。