单词	casein plastic
释义	casein plastic noun : any of certain tough hard hornlike substances obtained from powdered casein, usually rennet casein, with water as the usual plasticizer, hardened after molding by the action of formaldehyde or some other agent, and used chiefly in making buttons and buckles Word History First Known Use 1925, in the meaning defined above
随便看	gildhalls gilding gilding metal gildings gilds Gilead gileadite gileadites giles gilet gilets Gileño gileños gilgai gilgais Gilgamesh gilgamishes Gilgit gilgul gilgulim gilguy gilia Giliak giliak giliaks

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