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(Of a switch or its action) designed to break a circuit and stop a current quickly regardless of the speed with which it is operated.
Late 19th century; earliest use found in The Times.
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。