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单词 alarm cord
释义

Definition of alarm cord in English:

alarm cord

noun

  • 1A cord used to sound or activate an alarm bell (or occasionally an alarm gun or a similar device).

  • 2The communication cord on a railway train.

Origin

Mid 19th century; earliest use found in U.S. Patents.

Definition of alarm cord in US English:

alarm cord

noun

  • 1A cord used to sound or activate an alarm bell (or occasionally an alarm gun or a similar device).

  • 2The communication cord on a railway train.

Origin

Mid 19th century; earliest use found in U.S. Patents.
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更新时间：2025/7/5 0:33:07