YOU SAID:
I can't understand what you are saying.
INTO JAPANESE
私は、あなたが何を言っているのか理解できません。
BACK INTO ENGLISH
What you are saying I can't understand.
INTO JAPANESE
あなたが言っていることはわからない。
BACK INTO ENGLISH
Don't know what you're saying.
INTO JAPANESE
何を言っているか分からない。
BACK INTO ENGLISH
Do not know what you are saying.
INTO JAPANESE
何を言っているか分からない。
BACK INTO ENGLISH
Do not know what you are saying.
Come on, you can do better than that.