单词	argentite
释义	argentite noun ar·​gen·​tite ˈär-jən-ˌtīt  : a dark gray or black mineral of metallic luster that consists of native sulfide of silver and is a valuable silver ore Word History First Known Use circa 1868, in the meaning defined above
随便看	checkerspot butterfly checkerwise checkerwork checkest checkhook checking checking (off) checking (out) checking account checking back checking in checking into checking off checking off on checking on checking out checking over checking through checking up on checkle checkless checkline checklist checklists checkmark

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