string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%8D%E8%AF%AD%E4%BB%80%E4%B9%88%E4%B8%8D%E5%A6%82%E4%BB%80%E4%B9%88 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
词语什么不如什么
