相关单词同义词compulsory, deontic, 近义词 necessary 必要的, forcible 强制的, forced 被迫的, compulsory 强制的, required 必需的, requisite 必要的, essential 本质的, de rigueur 社交礼节上需要的..., statutory 法定的, mandatory 法定的, binding 镶边the law, 五经, 摩西五经, 摩西法律...反义词optional, 任选的临近词oblige, obligation, obligatory on, obligatory type, obligatory well, obligatory rule, obligatory bond, obligatory term, obligatory gene, obligatory case, obligatory norms, obligatory audit相似词objector, objet d'art, oblation, obligation, oblige, oblige sb with sth, obliged, obligee, 返回 obligatory