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单词	jackhammer
释义	jackhammer From Longman Dictionary of Contemporary EnglishRelated topics: Tools, Constructionjackhammerjack‧ham‧mer /ˈdʒækˌhæmə $ -ər/ noun [countable]  American EnglishTZTBC a large powerful tool used to break hard materials such as the surface of a road SYN pneumatic drill British EnglishExamples from the Corpusjackhammer• My responsibility button was being hit with the force of a jackhammer.• A jackhammer started up somewhere beyond the prison walls.• But today, crews wielding jackhammers are frantically repairing the narrow streets.
随便看	National Farmers Union National Farmers Union, the National Film Theatre National Film Theatre, the National Foundation on the Arts and the Humanities National Foundation on the Arts and the Humanities, the National Front National Front, the National Gallery National Gallery of Art National Gallery of Art, the National Gallery, the National Geographic National Geographic, The National Giro National Grid National Guard National Guardsman National Health Service National Health Service, the national holiday national income National Insurance National Insurance National Insurance Number

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