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 | Từ điển Oxford Advanced Learner 8th 
 
	
		| jack something up 
 
 ˌjack sthˈup derived
 1. to lift sth, especially a vehicle, off the ground using a  ↑jack
 •Thieves jacked up the car and stole the wheels.
 2. (informal)to increase sth, especially prices, by a large amount
 Main entry: ↑jackderived
 
 
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