string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E6%A0%B7%E7%A6%81%E6%AD%A2%E5%AD%A6%E7%94%9F%E5%9C%A8%E5%AE%B6%E7%8E%A9%E6%89%8B%E6%9C%BA%E5%91%A2 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
怎样禁止学生在家玩手机呢
