txt = "中国的企业和经济"


dic = { '企业': 0, '经济': 0, '中国': 0 }

class SearchEngine
  attr_accessor :txt, :dic

  def initialize(txt, dic)
    @txt = txt
    @dic = dic
  end
  #计算文章的云词频
  def yunciping
    dic.each do |k, v|
      dic[k] = txt.scan(k.to_s).count
    end
    puts dic
    return dic
  end
  #分词过程
  def fenci

  end
end

se = SearchEngine.new(txt, dic)
se.yunciping

现在我想实现，把 txt，按照 dic 里面的词来分词成为，中国/的/企业/和/经济，应该怎么实现？