相关单词同義詞dual, two, fold, redouble, duplicate, twifold, twofold, 近義詞adj. paired, twice, twin反義詞adj.single臨近詞doublet, dotty, doubler, doubled, doubles, doubleo, Double J, double X, Double T, Doubleau, doublevee, Doubleday相似詞doth, doting, dotted line, dotty, double (sb) up/over, double (up) as sth, double agent, double back, 返回 double