The method is signaled when the object is set to signal or the time out interval is finished.

当对象被设置发出信号或者超时时间段结束时，这个方法会得到通知。

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Her body has set off car alarms, interrupted the TV signal and blown out light bulbs.

她的磁性身体曾触发过汽车报警器、扰乱过电视信号、烧断过电灯泡的灯丝。

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The system signal model is set up, and the relevant formulas are given out.

建立了系统信号模型，给出计算误码率的公式。

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Interestingly, this week's statement of forthcoming Commons business, by the Leader of the House, Andrew Lansley, mentioned that Tuesday 19 March has been set aside for "proceedings on a bill", which might signal the deadline for sorting out the issue and bringing the Defamation Bill back.

BBC: Week ahead