YOU SAID:
I walked down the quiet beach.
INTO JAPANESE
私は静かなビーチを歩いた。
BACK INTO ENGLISH
I walked down the beach.
INTO JAPANESE
ビーチを歩いた
BACK INTO ENGLISH
Walked on the beach
INTO JAPANESE
浜辺を歩いた
BACK INTO ENGLISH
Walked on the beach
That didn't even make that much sense in English.