code: public static DictionaryMaker combine(String pathA, String pathB)
      {
          DictionaryMaker dictionaryMaker = new DictionaryMaker();
          dictionaryMaker.addAll(DictionaryMaker.loadAsItemList(pathA));
          dictionaryMaker.addAll(DictionaryMaker.loadAsItemList(pathB));
  
          return dictionaryMaker;
      }
docs: 合并两部词典
  
  @param pathA
  @param pathB
  @return