单词	cross-staff
释义	cross-staff noun ˈkrȯs-ˌstaf  : an instrument formerly used at sea for taking the altitude of a celestial body Word History First Known Use 1582, in the meaning defined above
随便看	pitting pitting against pittings pittite pittites pitto Pittosporaceae pittosporaceous pittosporum pittosporums scirrhous cord scirrhuses scis scis au scis aus scissel scissels scissile scission scissions scissiparity scissor scissor jack scissor tooth scissor truss

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