string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%A1%AC%E7%9B%98%E4%BD%8E%E6%A0%BC%E5%B7%A5%E5%85%B7%E6%98%AF%E5%B9%B2%E4%BB%80%E4%B9%88%E7%9A%84 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
硬盘低格工具是干什么的
