string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%80%83%E6%B3%A8%E4%BC%9A%E6%98%AF%E4%B8%BA%E4%BA%86%E4%BB%80%E4%B9%88 => Failed to connect to 61.171.74.35 port 38027: Connection refused"
考注会是为了什么
