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	nightlights nightlong nightlonger nightlongest nightly nightman nightmare nightmares nightmarish nightmarishly nightmen nightpieces nightriders nights nightscope nightscopes nightshade nightshade family nightshades nightshirt nightshirts nightside nightsides nightspot nightspots

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