string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%BA%E4%BB%80%E4%B9%88%E7%BE%8E%E5%9B%BD%E5%8F%AF%E4%BB%A5%E8%AF%B4%E6%80%BB%E7%BB%9F%E5%91%A2 => Failed to connect to 61.171.74.35 port 38041: Connection refused"
为什么美国可以说总统呢
