safety alarm

例句：

1. 1. The firedepartment responded to the emergency safety alarm.
   消防部门对紧急安全警报做出了回应。
2. 2. Thenew safety alarm system has improved our workplacesafety.
   新的安全警报系统提高了我们的工作场所安全性。
3. 3. The elderly should always be awareof their safety alarms and never ignorethem.
   老年人应该时刻注意他们的安全警报，绝不忽视。