code: public void loadWords(InputStream is, int wordType) throws IOException{
  		BufferedReader br = new BufferedReader(new InputStreamReader(is));
  		String w = null;
  		while ((w=br.readLine()) != null){
  			// Don't trim it, in case the word itself is blank.   w = w.trim();
  			Word word = new Word();
  			word.setWord(w);
  			word.setType(wordType);
  			if ((wordType & Word.TYPE_KEYWORD) != 0){
  				word.setKeywordAttachment(w);
  			}
  			addWord(word);
  		}
  	}
docs: 从流中载入一批指定类型的词条。如果某个词条在词典中已经存在，则合并。
  <p>
  Load a batch of word of specified type from stream. If any word already exists in the dictionary,
  then the new definition will be merged into existing one.
  
  @param is	输入流<br>The stream to read from.
  @param wordType	类型，定义在Word类中<br>Type of the word, which is defined in the class Word.
  @throws IOException