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quartz

noun
🔊/kwɔːts/
🔊/kwɔːrts/
[uncountable]
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  1. a hard mineral, often in crystal form, that is used to make very accurate clocks and watches石英
    • The watch runs with a normal quartz movement.手表以正常的石英机芯运行。
    Oxford Collocations DictionaryQuartz is used before these nouns:
    • crystal
    • watch
    See full entry
    Word Originmid 18th cent.: from German Quarz, from Polish dialect kwardy, corresponding to Czech tvrdý ‘hard’.