YOU SAID:
the sly fox jumps rapidly
INTO JAPANESE
狡猾なキツネは急速に飛び上がる
BACK INTO ENGLISH
a cunning fox jumps up rapidly
INTO JAPANESE
狡猾なキツネが急速に飛び上がる
BACK INTO ENGLISH
a cunning fox jumps up
INTO JAPANESE
狡猾なキツネが飛び上がる
BACK INTO ENGLISH
A cunning fox jumps up
INTO JAPANESE
狡猾なキツネが飛び上がる
BACK INTO ENGLISH
A cunning fox jumps up
That didn't even make that much sense in English.