The structure and function of electric fire monitor and alarm detector and electric fire monitoring device were introduced in detail.
详细介绍了电气火灾监控报警器和电气火灾监控设备的构成及功能。
When you go through a metal detector at the airport with a conductor such as keys in your pocket, the alarm goes off.
当你带着一个导体（比如口袋的钥匙）走过机场的金属探测器时，机器会发出警报声。
"The premise of a lie detector is that a smoke alarm goes off in the brain when we lie because we're doing something wrong," explains Saxe.
萨克斯解释说。“测谎机的前提是，当我们说谎时，因为我们正在做错事，大脑中的报警器响了。”
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