string(256) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B1%E8%AF%AD%E4%BA%8C%E8%BF%87%E5%9B%BD%E5%AE%B6%E7%BA%BF%E9%9A%BE%E4%B8%8D%E9%9A%BE => Failed to connect to 14.18.117.71 port 38093: Connection refused"
英语二过国家线难不难
