YOU SAID:

Knee high to a grass hopper

INTO JAPANESE

グラスホッパーまで膝上

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Above knee to grasshopper

INTO JAPANESE

バッタに膝の上

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Grasshopper on knee

INTO JAPANESE

バッタの膝の上

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Above the grasshopper's knee

INTO JAPANESE

バッタの膝の上

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Above the grasshopper's knee