alarmable

例句：

1. 1.The alarm clock woke us up at the crack of dawn.
   闹钟在黎明时分把我们叫醒。
2. 2.The police were alerted to the danger signal.
   警方被警告危险信号。
3. 3. He was warned not to touch that dangerous machine.
   他被警告不要触摸那台危险的机器。