워낙에 영얼 못해서.. When at last he is allowed to sleep to he will probably wake after some twelve hours and shoe little, if any, ill-effect. These laboratory observations are borne out by examples in everyday life. It sees clear that the human body is equipped to override the need for sleep in order to meet emergencies of quite long duration with faculties unimpaired. But this reversibility of the effect of loss of sleep in face of urgent and absorbing demands may be the greatest source of danger. People may think they are more efficient that they really are. 해석좀 부탁해요~