名词

1.[C,U] 抱怨；抗议；怨言；抱怨的缘由(+about/over/against)

2.可数名词：【律】控告；控诉(+against/with)

3.可数名词： 疾病，身体不适

单词分析

这些名词均有“疾病”之意。

illness不具体指，而是泛指一切疾病，强调生病的时间或状语，语体较sickness正式一些。

sickness较口语化，可与illness换用，但还可表示“恶心”。

disease指具体的疾病，且通常较严重，发病时间也较长。

complaint现代英语中，既可指症状，也可指疾病。

英语解释

(formerly) a loud cry (or repeated cries) of pain or rage or sorrow

an often persistent bodily disorder or disease; a cause for complaining

(criminal law) a pleading describing some wrong or offense

(civil law) the first pleading of the plaintiff setting out the facts on which the claim for relief is based

an expression of grievance or resentment