I cannot forgive myself for not seeing my mother when she was sick in bed.
母亲病的时候我没能去看她,为这件事我永远不能原谅我自己。
In fact a basic amount of movement occurs during sleep which is specifically concerned with preventing muscle inactivity.
事实上,睡眠状态下仍有着基本的活动量,以防止肌肉活动停止。