string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E6%A1%88%E4%BE%8B%E9%A2%98%E5%9E%8B%E5%88%86%E6%95%B0 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
注安案例题型分数
