相关单词同义词precious, golden, 近义词 rare 罕见的, scarce 缺乏的, uncommon 不寻常的, occasional 偶然的, irregular 不规则的, sparse 稀少的, scattered 分散的, unique 独特的, few and far between 稀疏的, sporadic 不定时发生的..., intermittent 间歇的, few 很少的, fitful 断断续续的反义词frequent, 频繁的临近词infringe, infrastructure, infrequently, infrequent pulse, infrequent noise, infrequent types, infrequent objects, infrequent inquiry, infrequent itemset, infrequent itemsets, infrequent menstruation, infrequent fatal emergency相似词infrared, infraspinatous, infraspinatus, infrastructure, infringe, infringe on/upon sth, infringement, infructuous, 返回 infrequent