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A mechanism for keeping a watch or clock going while it is being wound.
Mid 18th century; earliest use found in Alexander Cumming (d. 1814), watchmaker and mechanician.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。