It is important to exclude any underlying illness that may be responsible for the fatigute.

排除可能导致疲劳的潜在病因是很重要的

fatigute

underlying

It is marked by cumulative exhaustion that persists even after recovery periods.

cumulative 累计的

exhaustion 疲惫 精疲力尽 用尽 枯竭 fatigute

persistent坚持不懈的

其明显的特征就累积的疲劳,这种疲劳甚至持续到恢复期之后