string(284) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%96%E7%95%8C%E4%B8%8A%E6%9C%80%E5%A4%A7%E7%9A%84%E7%8B%97%E6%98%AF%E4%BB%80%E4%B9%88%E7%8A%AC%E5%93%81%E7%A7%8D => Failed to connect to 101.91.112.32 port 38162: Connection refused"
世界上最大的狗是什么犬品种
