She said periods of micro sleep were thought to be the most likely cause of people falling asleep at the wheel while driving.
她说，一般认为，造成微睡眠多半像汽车驾驶司机驾车时打瞌睡。
She said periods of micro sleep were thought to be the most likely cause of people falling asleep at the wheel while driving.
她说，一般认为，造成微睡眠多半像汽车驾驶司机驾车时打瞌睡。
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