string(285) "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%E9%AB%98%E5%A4%A7%E7%9A%84%E7%8A%AC%E6%98%AF%E4%BB%80%E4%B9%88%E7%8A%AC%E7%B1%BB => Failed to connect to 101.89.117.144 port 38017: Connection refused"
世界上最高大的犬是什么犬类
