string(260) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ips%E7%A1%AC%E5%B1%8F%E6%98%AF%E7%94%A8%E4%BB%80%E4%B9%88%E6%9D%90%E6%96%99%E5%81%9A%E7%9A%84 => Failed to connect to 101.89.120.29 port 38231: Connection refused"
ips硬屏是用什么材料做的
