Sleep, when deep enough, is indistinguishable from vigilance.
睡眠，当足够深的时候，与警觉是分不开的。
-- R. Scott Bakker R.Scott Bakker先生
Sleep, when deep enough, is indistinguishable from vigilance.
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Sleep, when deep enough, is indistinguishable from vigilance.
睡眠，当足够深的时候，与警觉是分不开的。
-- R. Scott Bakker R.Scott Bakker先生
