慢性疲劳症候群màn xìng pí láo zhèng hòu qúnmanxingpilaozhenghouqunchronic fatigue syndrome (CFS)Characters in this word候to wait, to expect劳to labor, to toil性sex, nature, character慢slowly, leisurely疲weak, tired, exhausted症ailment, disease, illness群group, crowdStudy it in Yanamino