警报响起十分钟后，危险解除的信号就响了。

The all clear was sounded about 10 minutes after the alert was given.

《柯林斯英汉双解大词典》

信号是一个事件，它被用来向某个进程发出警报。

A signal is an event, and it's used to alert a process.

youdao

天文台发出了机场天气警报和强烈季候风信号。

Aerodrome Warning and the Strong Monsoon Signal were issued.

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确保所有警报信号都开着。

Make sure all alarms are on.

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这是警报信号。

It's the alert signal.

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了解一下大楼里的火警警报信号在哪里。

Learn where the fire alarm is in the building.

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发出响亮尖利声音的警报信号。

So they had bypassed the warning signal.

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发出响亮尖利声音的警报信号。

So they had bypassed the warning signal.

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