string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ipad2018%E5%92%8Cipad2019%E5%93%AA%E4%B8%AA%E6%9B%B4%E5%80%BC%E5%BE%97%E4%B9%B0 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
ipad2018和ipad2019哪个更值得买
