YOU SAID:

Hi, I don't know what this is but hi!

INTO JAPANESE

こんにちは、これは何なのかわかりませんが、こんにちは！

BACK INTO ENGLISH

Hello, this is I do not know what it is, Hello!

INTO JAPANESE

こんにちは、これは何なのかわかりません、こんにちは！

BACK INTO ENGLISH

Hello, this is I do not know what it is, Hello!