YOU SAID:
A quickest brown fox jumps over the laziest dog
INTO JAPANESE
最も足の速い茶色のキツネが最も怠惰な犬を飛び越える
BACK INTO ENGLISH
The fastest brown fox jumps over the laziest dog
INTO JAPANESE
最速の茶色のキツネが最も怠惰な犬を飛び越える
BACK INTO ENGLISH
The fastest brown fox jumps over the laziest dog
That didn't even make that much sense in English.