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 | Từ điển Oxford Advanced Learner 8th 
 
	
		| belt up 
 
 ˌbelt ˈup derived
 (BrE)
 1.  (NAmE ˌbuckle ˈup) (informal)to fasten your  ↑seat belt   (= a belt worn by a passenger in a vehicle)
 2. (informal)used to tell sb rudely to be quiet
 Syn:   ↑shut up
 •Just belt up, will you!
 Main entry: ↑beltderived
 
 
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