YOU SAID:

if you up 1 floor and back down 1 floor, then go up 2 floor just to go down again 2 floors; you'll be at the exact same floor

INTO JAPANESE

2 階を 1 階と 1 階に戻って一度再び 2 階を下るだけ正確な同じ床になるでしょう

BACK INTO ENGLISH

The second floor will be the same exact same floor as going back to the first floor and the first floor once again down the second floor

INTO JAPANESE

2階は1階に戻って1階に戻り、2階にもう一度戻ります。

BACK INTO ENGLISH

On the second floor return to the first floor, return to the first floor and return to the second floor again.

INTO JAPANESE

2階に戻って1階に戻り、1階に戻って再び2階に戻ります。

BACK INTO ENGLISH

Returning to the second floor, return to the first floor, return to the first floor and return to the second floor again.

INTO JAPANESE

2階に戻り、1階に戻り、1階に戻り、再び2階に戻ります。

BACK INTO ENGLISH

Returning to the second floor, return to the first floor, return to the first floor and return to the second floor again.