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A watch with a mechanism that can be adjusted to sound an alarm at a particular time set in advance; compare earlier "larum watch".
Mid 17th century; earliest use found in Robert Boyle (1627–1691), natural philosopher.
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。