string(240) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E5%8E%BB%E9%99%A4%E7%94%B5%E8%84%91%E5%86%85%E5%AD%98 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
怎么去除电脑内存
