单词	chronometer
释义	chronometer /krəˈnɒmɪtə / noun An instrument for measuring time accurately in spite of motion or variations in temperature, humidity, and air pressure.The process of mapping itself, now much more accurate thanks to Britain's invention of the chronometer for measuring longitude, allowed the British to perceive the globe as an integrated whole.... Preuss pocketed the chronometer and clutched his notebook. And one might think initially they didn't do that because they didn't have the instruments, they didn't have the precise chronometers.
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