string(235) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=word%E6%80%8E%E4%B9%88%E6%9F%A5%E8%AF%A2%E5%85%B3%E9%94%AE%E8%AF%8D => Failed to connect to 101.89.143.195 port 38109: Connection refused"
word怎么查询关键词
