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Từ điển Oxford Advanced Learner 8th 
	
		  strike somebody down   
  ˌstrike sb ˈdown derived  usually passive  1. (of a disease, etc.)to make sb unable to lead an active life; to make sb seriously ill; to kill sb   •He was struck down by cancer at the age of thirty.   2. to hit sb very hard, so that they fall to the ground    Main entry: ↑strikederived
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