YOU SAID:
He walked briskly down the street.
INTO JAPANESE
彼は勢いよく通りを歩いた。
BACK INTO ENGLISH
He walked down the street vigorously.
INTO JAPANESE
彼は勢いよく通りを歩いた。
BACK INTO ENGLISH
He walked down the street vigorously.
That didn't even make that much sense in English.