YOU SAID:

I am not sure what this does.

INTO JAPANESE

これが何をするのか分かりません。

BACK INTO ENGLISH

I don't know what this does.

INTO JAPANESE

理解できんのだ

BACK INTO ENGLISH

I don't know what this is.

INTO JAPANESE

理解できんのだ

BACK INTO ENGLISH

I don't know what this is.