string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%86%99%E4%B8%80%E4%BB%B6%E5%AE%B3%E6%80%95%E7%9A%84%E4%BA%8B%E6%83%85 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
写一件害怕的事情
