相关单词同義詞debt, liability, 近義詞 charge, duty反義詞choice, freedom臨近詞obligatory, obligate, obligations, obligation fee, obligation law, obligation bond, obligation well, obligation sale, obligation fees, obligation right, obligation model, obligation of tax相似詞objective, objector, objet d'art, oblation, obligatory, oblige, oblige sb with sth, obliged, 返回 obligation