英语词汇“silent alarm”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	silent alarm
释义	WordReference Random House Unabridged Dictionary of American English © 2024 si′lent alarm′, Electronicsan alarm that alerts security personnel or the police without the knowledge of the intruder or criminal whose presence triggers it:The silent alarm set off a flashing light at the police station. Electronicsany visual rather than audible alarm.
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