string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=ps%E5%AF%B9%E7%94%B5%E8%84%91%E8%A6%81%E6%B1%82%E5%BE%88%E9%AB%98%E5%90%97 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
ps对电脑要求很高吗
