permanency

n.永久；永久的事物

There's no permanency about those little distinctions. 那些小小的头衔并不能保持永久。

Of course permanency has been a problem for artists since the first prehistory artist scratched into a chalk wall in a French cave. 当然，对艺术家来说，保存永久的艺术形式是一个问题，比如说，史前艺术家以前在山洞的石灰墙上创造作品，但现在不会有人这么做了。