YOU SAID:
a horse doesn't eat hay
INTO JAPANESE
馬は干し草を食べません
BACK INTO ENGLISH
Horses don't eat hay
INTO JAPANESE
馬は干し草を食べない
BACK INTO ENGLISH
Horses do not eat hay
INTO JAPANESE
馬は干し草を食べません
BACK INTO ENGLISH
Horses don't eat hay
INTO JAPANESE
馬は干し草を食べない
BACK INTO ENGLISH
Horses do not eat hay
it is unlikely that this phrase will ever reach equilibrium