YOU SAID:
The king doth keep his revels here tonight
INTO JAPANESE
王は今夜ここで彼の歓喜を保ちます
BACK INTO ENGLISH
The king keeps his delight here tonight
INTO JAPANESE
王は今夜ここで喜びを保ちます
BACK INTO ENGLISH
The king keeps joy here tonight
INTO JAPANESE
王は今夜ここで喜びを保ちます
BACK INTO ENGLISH
The king keeps joy here tonight
That didn't even make that much sense in English.