Headphones with built-in alarm will wake you up in the morning.

带嵌入式闹铃的耳机早上会唤醒你。

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It has a built-in alarm clock that goes off exactly every 24 hours.

蜜蜂身体里有一个天生的的“闹钟”，它准确地每24小时循环一次。

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A radio having a built-in alarm clock that can be set to turn the radio on automatically.

附带时钟收音机，收音机闹钟：一种具有内设警钟，可以设定时间自动打开的收音机。

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When that happens, the brain's built-in alarm to breathe doesn't go off, despite a lack of oxygen.

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The bombers who targeted commuter trains in Madrid on March 11 used the built-in alarm clock in mobile phones to set off explosives.

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The portability crowd will be a bit bummed that the Soloist only plays when connected to an AC outlet, as a battery compartment is MIA, but you will be able to wake to your favorite tune or Sirius station thanks to the built-in alarm clock, which could possibly make dragging yourself out of bed at least slightly less excruciating.

ENGADGET: Directed unveils Soloist universal media dock