YOU SAID:

My xylophone didn't comprehend the accuracy of the measurement

INTO JAPANESE

木琴は、測定の精度を理解しませんでした

BACK INTO ENGLISH

Xylophone did not understand the accuracy of the measurement

INTO JAPANESE

木琴は、測定の精度を理解していませんでした

BACK INTO ENGLISH

Xylophone did not understand the accuracy of the measurement