单词	fossil ivory
释义	fossil ivory noun : ivory that has been buried long enough to become yellowish, variegated, sepia, or black in color see old bering sea Word History First Known Use 1728, in the meaning defined above
随便看	spaceflights spacelabs spaceless spaceman spacemen spaceport spaceports spacer spacer bar spacers spaces spaces out spaceship spaceships spacest spacesuits spacewalk spacewalked spacewalker spacewalkers spacewalking spacewalks spaceward spacewoman spacewomen

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