תרגום - סינית-יפנית - 對不起,請你原諒我

Romanized:
Gomen nasai. Yurushite kudasai.

This is the way you would say it to an equal.
To a superior, you might say

ごめんなさい。お許しください。

Romanized:
Gomen nasai. O-yurushi kudasai.