alarm clock

名词 n.
中文释义

英文释义

名词 n.
  1. A clock designed to sound an alert at a preset time, primarily to wake someone from sleep.
    — "I should suggest an alarum clock," he said briskly. "I always use one myself for fear of oversleeping.[…]"

词形变化

alarm clocks plural alarum clock alternative,archaic
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