alarm call

noun
🔊/əˈlɑːm kɔːl/
🔊/əˈlɑːrm kɔːl/
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  1. a phone call that is intended to wake you up催醒电话;叫醒电话
    • Could I have an alarm call at 5.30 tomorrow, please?请在明天早晨 5:30 打电话叫醒我好吗?🔊🔊
    Topics Phones, email and the internetb2
  2. a sound of warning made by a bird or animal (鸟兽遇险时发出的)报警鸣叫;告警声