相关单词同义词double, two, tier, 近义词 double 双重的, twofold 两倍的, duplicate 副本, twin 孪生的, treble 三倍的, duple 二倍的, two-fold 双面的, three-fold 三倍的, threefold 三倍的临近词dualism, DU, Duall, Duald, Duale, duals, Duala, dually, Dualeh, Dualar, dualin, Dualoy相似词dryer, drystone wall, drywall, DSL, dual carriageway, dual-purpose, dualism, duality, 返回 dual