YOU SAID:

I don't really know what this is supposed to do.

INTO JAPANESE

これが何をするのかよくわかりません。

BACK INTO ENGLISH

I'm 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 understand 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 understand what this does.