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有。alarm作名词时意为“闹钟；警报，警告器；惊慌”。作及物动词时意为“警告；使惊恐”。一般来说会用“Alarm Clock”来表示闹钟；闹表；复位时钟；机闹表的含义。
alarm的例句
An alarm sounds when the temperature reaches a predetermined level.
温度一达到预设的度数，警报就会响起来。
When I saw the smoke, I tried to sound the alarm.
看到烟后，我就设法发出警报。
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？
A car alarm went off in the middle of the night.
半夜里一辆汽车的警报器突然响了起来。
The number of reported crimes is increasing at an alarming rate.
报警案件的数量正在以惊人的速度增长。