▶ 检索字段/"word1 nw/x word2" 或 检索字段/(word1 or word3...) nw/x (word2 or word4...),word1和word2 或 list1(word1 or word3...)和list2(word2 or word4...)出现在同一句,相隔不超过x个词
▶ 检索字段/"word1 np/x word2" 或 检索字段/(word1 or word3...) np/x (word2 or word4...),word1和word2 或 list1(word1 or word3...)和list2(word2 or word4...)出现在同一段,相隔不超过x个词