Rejuvenate your system while you sleep and have less fatigue the next day.
振兴你的系统，而你睡觉，并减少疲劳的第二天。
Fatigue strength is less than static stress strength such as elasticity limit, yield strength.
疲劳强度低于弹性极限或屈服强度等静应力强度。
You will be less distracted by pain and fatigue, and you will sleep better.
你不会疼痛和劳累而心烦意乱，并且你也会睡得更好。
You will be less distracted by pain and fatigue, and you will sleep better.
你不会疼痛和劳累而心烦意乱，并且你也会睡得更好。
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