YOU SAID:

I cannot figure out what this does.

INTO JAPANESE

これが何をするのかわかりません。

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.