YOU SAID:

The black surface is reversed rust

INTO JAPANESE

黒い表面が逆錆びている

BACK INTO ENGLISH

The black surface is reverse rusted.

INTO JAPANESE

黒い表面は逆錆びています。

BACK INTO ENGLISH

The black surface is reverse rusty.

INTO JAPANESE

黒い表面は逆錆びています。

BACK INTO ENGLISH

The black surface is reverse rusty.