单词	covariate
释义	covariate noun co·​var·​i·​ate ˌkō-ˈver-ē-ˌāt  -ət, ˈkō-ˌver- : any of two or more random variables exhibiting correlated variation Word History First Known Use 1965, in the meaning defined above
随便看	doublets Doublette doublettes doublewides doublier doubliest doubling doubling (as) doubling (back) doubling (in) doubling as doubling back doubling cube doubling down doubling in doubling up doubling up on doublings doubloon doubloons doublure doublures doubly doubly ruled surface doubt

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