string(234) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B9%E6%9E%9Cipad2018%E5%92%8C2020%E7%9A%84%E5%8C%BA%E5%88%AB => Failed to connect to 125.88.227.171 port 38114: Connection refused"
苹果ipad2018和2020的区别
