Getting a DNT signal does not oblige anyone to stop tracking, although some companies have promised to do so.

获得 DNT 信号并不意味着任何人都必须停止跟踪，尽管一些公司已经承诺会这样做。

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With the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?

通过将正确的设备调整到正确的频率，如何防止小偷干扰你的设备阻止警报信号到达基站呢？

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The is_dumping global variable is used to stop other threads from changing the contents of the buffer once a signal has been received to dump data.

一旦接收到了转储数据的信号，将使用 is_dumping 全局变量禁止其他的线程更改该缓冲区的内容。

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Because tunnels block a radar signal, trains rely largely on hard-wired equipment like the box beside the track, which helps drivers and dispatchers talk to each other and controls a machinelike traffic signal, giving the drivers basic commands to stop and go.

NEWYORKER: Boss Rail

Obama also made clear that Israel has the right to defend itself as it sees fit, which amounted to a diplomatic signal that Washington would not stop a unilateral Israeli strike at some future point if no progress occurred.

CNN: Obama, Netanyahu agree on preventing nuclear-armed Iran

On the night of July 23, 2011, when trains began to stack up, dispatchers and maintenance staff raced to repair the faulty signal and ignored the simplest solution: stop the trains and regain the signal.

NEWYORKER: Boss Rail