YOU SAID:
Fish swim in a pond and eat poo.
INTO JAPANESE
池に泳ぐ魚し、うんちを食べる。
BACK INTO ENGLISH
Fish swimming in the pond, and yes eating POO.
INTO JAPANESE
魚は池で泳いではいうんちを食べるします。
BACK INTO ENGLISH
Fish swim in the pond and eat poo.
INTO JAPANESE
池に泳ぐ魚し、うんちを食べる。
BACK INTO ENGLISH
Fish swimming in the pond, and yes eating POO.
INTO JAPANESE
魚は池で泳いではいうんちを食べるします。
BACK INTO ENGLISH
Fish swim in the pond and eat poo.
it is unlikely that this phrase will ever reach equilibrium