string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%8D%E5%8D%91%E4%B8%8D%E4%BA%A2%E7%9A%84%E8%A7%A3%E9%87%8A => Failed to connect to 101.89.117.144 port 38017: Connection refused"
不卑不亢的解释
