YOU SAID:
I bet nobody can translate this
INTO JAPANESE
誰もこれを翻訳できないに違いない
BACK INTO ENGLISH
No one must be able to translate this
INTO JAPANESE
誰もこれを翻訳できてはいけません
BACK INTO ENGLISH
No one should be able to translate this
INTO JAPANESE
誰もこれを翻訳できないはずです
BACK INTO ENGLISH
No one should be able to translate this
Come on, you can do better than that.