YOU SAID:

A horse is not actually flying. It's an optical illusion

INTO JAPANESE

馬が実際に飛行していません。それは目の錯覚

BACK INTO ENGLISH

Horses are not actually flying. It's a trick of the eye

INTO JAPANESE

馬は、実際には飛んでいません。それは目の錯覚

BACK INTO ENGLISH

Horse flies are actually. It's a trick of the eye

INTO JAPANESE

馬はハエが実際に。それは目の錯覚

BACK INTO ENGLISH

Horse flies are actually. It's a trick of the eye