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%E9%B8%AD%E6%AF%94%E9%B8%A1%E4%BE%BF%E5%AE%9C%E4%B8%80%E4%BA%9B%E5%91%A2 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
为什么鸭比鸡便宜一些呢
