Definition: a loud noise or flashing light that warns you of danger Level: B1
那响亮的哔哔声是火警警报，警告所有人离开大楼。
The loud beeping sound was the fire ___alarm, warning everyone to leave the building.
是什么触发了警报？
What set off the ___alarm?
当厨房的烟雾报警器响起时，我们迅速打开了窗户。
When the smoke ___alarm went off in the kitchen, we quickly opened the windows.
