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	self-treated self-treating self-treatment shchis shd she she must be joking she teak she'd she'll she's she's joking she's on she's your man she-ass she-balsam she-beech she-crab she-devil she-god she-gods she-ironbark she-oak she-pine she-woman

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