单词	hard hat
释义	hard hat From Longman Dictionary of Contemporary EnglishRelated topics: Constructionhard hatˌhard ˈhat noun [countable]  TBCa protective hat, worn especially by workers in places where buildings are being builtExamples from the Corpushard hat• If hydrogen sulfide or some other poisonous gas is detected, Donahue dons an airtight breathing device and a hard hat.• A hard hat can protect you from having a metal spike go through your skull and into your brain.• I had to put my hard hat on and go to work.• When no vapors are present, he simply wears the hard hat.From Longman Business Dictionaryhard hatˈhard hat noun [countable]1a protective hat worn by buildersHard hats are now required by the Occupational Safety and Health Administration for all construction workers.2American English informalJOB a worker in the building industryPeople working in television tend not to feel at home with hard hats and blue collars.
随便看	good faith money good for good for good for good for (doing) something good for doing good for nothing good for one a year etc good for one month year etc good for one month/a year etc good for some a hundred miles etc good for some time hundred miles etc good for some time/a hundred miles etc good for somebody good for something Good Friday Good Friday Agreement good girl etc good girl/boy/dog etc good God good going bad going good going/not bad going good gracious good grief good grief

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