YOU SAID:
The quick brown foxes jumped over the lazy dog.
INTO JAPANESE
クイックブラウンキツネは怠惰な犬の上を飛び出しました。
BACK INTO ENGLISH
The quick brown fox jumped over the lazy dog.
INTO JAPANESE
クイックブラウンキツネは怠惰な犬の上に飛びついた。
BACK INTO ENGLISH
The quick brown fox jumped over the lazy dog.
That didn't even make that much sense in English.