相关单词同义词lieu, stead, 近义词 switch 转换, replacement 更换, exchange 交换, swap 交换, changeover 转换, change 变化, relief 减轻, transposition 调换, permutation 交换, commutation 代偿临近词substrate, substitute, substitutions, substitutional, substitutionary, substitution law, substitution ion, Substitution rue, substitution rule, substitution area, substitution test, substitution ways相似词substantive, substation, substitute, substitute teacher, substrate, substratum, substructure, subsume, 返回 substitution