YOU SAID:
i'm the luckiest man in the earth!
INTO JAPANESE
私は地球上で最も幸運な男です!
BACK INTO ENGLISH
I am the luckiest man on earth!
INTO JAPANESE
私は地球上で最も幸運な男です!
BACK INTO ENGLISH
I am the luckiest man on earth!
That didn't even make that much sense in English.