单词	Roman cement
释义	Roman cement noun : a natural cement prepared by calcining septaria and grinding it dry to a fine powder Word History First Known Use 1800, in the meaning defined above
随便看	January januarys januis clausis Janus Janus green Janus word Janus-faced januses Januslike janusses Janwar Janáček Jap Jap clover Jap mink japan Japan allspice Japan ashberry Japan bittersweet japan blue Japan camphor Japan cedar japan clover Japan fox Japan globeflower

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