YOU SAID:

A quick brown fox jumps over the thousand lazy dogs

INTO JAPANESE

素早い茶色のキツネが何千もの怠惰な犬を飛び越える

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A swift brown fox jumps over thousands of lazy dogs

INTO JAPANESE

足の速い茶色のキツネが何千頭もの怠惰な犬を飛び越える

BACK INTO ENGLISH

A swift brown fox jumps over thousands of lazy dogs