used to store large amounts of data, it has a timer, to a certain number, it will automatically alarm.
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it has a timer
它有一个计时器
以上为机器翻译结果，长、整句建议使用 人工翻译 。
One particular example has it guiding users though an efficient power nap, by starting a timer once they've started dozing and only waking them once they've come out of a deeper sleep state.
ENGADGET: Sony patent application puts electrodes in a pillow, eases you out of slumber
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