单词	visit in return,
释义	英華字典資料庫同義詞☞mothering
随便看	vector coupling coefficient vector cross product vector current vector data vector data format vector data model vector data structure vector decomposition vector density vector descriptor vector diagram vector-diagram vector difference vector differential operators vector differential operators-- rectangular vector differential operators-- spherical vector differential operators， cylindrical vector differential operators， rectangular vector differential operators， spherical vector differentiation vector diffraction theory vector displacement vector display vector display device vector dominance model