string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%A4%96%E8%84%9A%E6%89%8B%E6%9E%B6%E4%B8%8E%E5%BB%BA%E7%AD%91%E7%89%A9%E7%AD%89%E9%AB%98%E5%AF%B9%E5%90%97 => Failed to connect to 14.18.117.71 port 38220: Connection refused"
外脚手架与建筑物等高对吗
