YOU SAID:

My happy brother is going tommorrow to the gym to lose pounds while i'm going to the awesome city of Washington and i'm going to eat beans there

INTO JAPANESE

私がワシントンの素晴らしい街に行き、そこで豆を食べる間、私の幸せな兄は明日ジムに行き、ポンドを失います。

BACK INTO ENGLISH

My happy brother goes to the gym tomorrow and loses pounds while I go to the wonderful city of Washington and eat beans there.

INTO JAPANESE

私の幸せな兄は明日ジムに行き、私がワシントンの素晴らしい街に行ってそこで豆を食べる間、ポンドを失います。

BACK INTO ENGLISH

My happy brother goes to the gym tomorrow and loses pounds while I go to the wonderful city of Washington and eat beans there.