string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%AD%E5%9B%BD%E9%9E%8B%E5%AD%90%E7%A9%BF37%E7%A0%81%E6%98%AF%E7%BE%8E%E5%9B%BD%E7%9A%84%E4%BB%80%E4%B9%88%E7%A0%81 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
中国鞋子穿37码是美国的什么码
