相关单词近义词 treble 三倍的, threefold 三倍的, double 双重的, twofold 两倍的, triple 有三部分的, two-fold 双面的, dual 双重的临近词three ply, three, threephase generator, three-layered node, three-quarter coat, three - phase flow, three path amplifier, three condition jack, three-layer system, three- tank system, three-way stopcock, three-world theory 返回 three-fold