string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%8F%E8%81%94%E5%BD%93%E6%97%B6%E6%8C%96%E5%9C%B0%E7%90%83%E4%B8%BA%E4%BD%95%E5%81%9C%E4%B8%8B%E6%9D%A5%E4%BA%86 => Failed to connect to 101.89.143.195 port 38109: Connection refused"
苏联当时挖地球为何停下来了
