string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%AB%98%E7%BB%8F%E6%B5%8E%E5%B8%88%E7%AD%94%E8%BE%A9%E4%BE%8B%E9%A2%98 => Failed to connect to 101.89.117.144 port 38017: Connection refused"
高经济师答辩例题
