YOU SAID:
If it isn't the one and only
INTO JAPANESE
それが唯一無二じゃないなら
BACK INTO ENGLISH
If it's not the only one
INTO JAPANESE
それが唯一のものではない場合
BACK INTO ENGLISH
if it's not the only one
INTO JAPANESE
それが唯一のものではない場合
BACK INTO ENGLISH
if it's not the only one
You've done this before, haven't you.