| 单词 | chronic fatigue syndrome | 
| 释义 | chronic fatigue syndrome uncountable noun   Chronic fatigue syndrome is an illness that is thought to be caused by a virus, and which affects people for a long period of time. Its symptoms include tiredness and aching muscles. The abbreviation CFS is often used.   He was then struck down by a virus and then diagnosed with chronic fatigue syndrome.  | 
	
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