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English definition of “ring/sound alarm bells”

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ring/sound alarm bells

If something rings/sounds alarm bells, it makes you start to worry because it is a sign that there may be a problem: The name rang alarm bells in her mind.
Translations of “ring/sound alarm bells”
in Chinese (Traditional) 敲警鐘, 發出危險信號, 引起警覺…
in Chinese (Simplified) 敲警钟, 发出危险信号, 引起警觉…
(Definition of ring/sound alarm bells from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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