string(240) "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%E5%BA%9F%E9%93%81%E4%BC%9A%E9%99%8D%E4%BB%B7 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
为什么废铁会降价
