Volunteers answered detailed questionnaires to assess changes in their sleep, fatigue and quality of life at the start and end of the three-month study.
志愿者们详细填写了调查表，评估了从研究开始至三个月结束时他们的睡眠质量、疲乏状况和生活质量。
2
But you should run hard enough at the end to accustom your body to the late-race fatigue of the marathon.
你应该在将近结束时跑得卖力一点，这样会使你的身体适应马拉松比赛时后期的疲惫感。
3
At what point does your goodwill end, and compassion fatigue set in?