timeless

A simple black dress is a timeless piece of clothing that never goes out of fashion.

(Chinese) 一条简约的黑裙是一件永不过时的经典服装。

The beauty of the ancient Greek statues seems timeless and modern even today.

(Chinese) 古希腊雕像的美感似乎是永恒的，即便在今天看来也很现代。