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Chronometer
01
時計, 海用時計
a timepiece that shows the time in a very exact way, especially one used at sea
chronometer
n
例
The navigator relied on a marine chronometer to determine the ship's longitude during the voyage.
She used a high-quality chronometer to ensure accurate timing in her scientific experiments.
They calibrated the chronometer to ensure it met the strict standards for accuracy in their research.
The chronometer's accuracy was tested regularly to maintain its reliability for professional use.
The chronometer was essential for astronomers to track celestial events with precision.
