单词	Allen screw
释义	Allen screw noun Al·​len screw ˈa-lən-  hardware : a screw with a hexagonal socket in its head that is designed to be used with an Allen wrench Word History First Known Use 1917, in the meaning defined above
随便看	tringoid Trinidad Trinidad and Tobago Trinidad asphalt trinidad pitch trinidades trinidadian trinidadians trinidads Trinil man trining trinitarian trinitarianism trinitarianisms trinitarians trinities trinitr- trinitramine trinitrates trinitride trinitro trinitro- trinitrobenzene trinitrobenzenes trinitrocresol

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