string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%B7%E7%A4%BA%E7%9A%84%E6%A0%BC%E5%BC%8F%E5%8F%8A%E8%8C%83%E6%96%87 => Failed to connect to 101.89.143.195 port 38205: Connection refused"
请示的格式及范文
