sound an alarum
该短语常用于文学或历史语境中，表示发出警报。
The guard sounded the alarum as soon as he saw the intruder.
警卫一看到入侵者就拉响了警报。
警报，惊慌
alarums — plural of alarum
危险信号或警告。；战斗号召。；惊慌；警报
an automatic signal (usually a sound) warning of danger
危险信号或警告。
A danger signal or warning.
战斗号召。
A call to arms.
The sudden alarum from the watchtower sent the villagers rushing to the gates.
瞭望塔突然传来的警报声让村民们冲向城门。
用法提示：alarum作名词，表示警报信号
He was startled by the alarum of the fire bell in the dead of night.
他在深夜被火警铃声的警报惊醒。
用法提示：alarum指火警铃声，引起惊慌
The army's approach was heralded by the alarum of trumpets and drums.
军队的逼近以喇叭和鼓的警报为前兆。
用法提示：alarum借用于军事警报，强调警示功能
该短语常用于文学或历史语境中，表示发出警报。
The guard sounded the alarum as soon as he saw the intruder.
警卫一看到入侵者就拉响了警报。
The alarum of the fire bell woke everyone up.
火警钟的警报声把所有人都吵醒了。
这个词现已过时，现代英语中通常用 'alarm'。
She looked around with alarum when she heard the crash.
听到撞击声时，她惊慌地环顾四周。
grammar · medium
易错句子The news alarummed everyone.
正确表达The news alarmed everyone.
误将名词 'alarum' 用作动词；现代英语中表示'使惊慌'需用动词 'alarm'。
grammar · medium
易错句子He sounded alarum when he saw smoke.
正确表达He sounded an alarum when he saw smoke.
可数名词 'alarum' 前缺少冠词；在 'sound an alarum' 等短语中需加不定冠词 'an'。
alarum是alarm的古旧或文学变体，现代英语中常用alarm
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