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	drosophilas drosophilidaes drosophilist drosophylla drosophyllum drosophyllums drospo dross drosser drosses drossier drossiest drossinesses drossy drostdy drott-kvaett Drouet drought drought spot droughtier droughtiest droughtiness droughtinesses droughts droughty

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