如果他们在系统布防时发现了什么问题，就会向基站发送无线警报信号，然后基站会发出警报。
If they detect something wrong while the system is armed, they'll transmit a wireless alert signal to a base station that will then raise the alarm.
答：这套自动神经系统利用肾上腺激素(一种神经递质，或者称为化学信使)把信号发送到身体的各个部分，以便激活“斗争还是逃避”反应。
A: the autonomic nervous system USES the hormone adrenaline, a neurotransmitter, or chemical messenger, to send signals to various parts of the body to activate the fight-or-flight response.
这个故事中介绍的方法是这样的：系统中存在着第二个控制器进程，它能通过专用通道向设备发送suspend operation信号。
The twist in the tale is as follows: a second controller process exists in the system that can send a suspend operation signal to your device over a dedicated channel.
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