YOU SAID:
That's understandable. It must have been
INTO JAPANESE
それは理解できます。だったに違いない
BACK INTO ENGLISH
I understand that. Must have been
INTO JAPANESE
という事は承知しています。されている必要があります
BACK INTO ENGLISH
I know that. Must have been
INTO JAPANESE
そんなこと知ってる。されている必要があります
BACK INTO ENGLISH
I know that. Must have been
Come on, you can do better than that.