string(231) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%AF%AB%E5%AD%90%E4%B9%A6%E8%A1%A8%E8%BE%BE%E6%96%B9%E5%BC%8F => Failed to connect to 101.89.143.195 port 38205: Connection refused"
诫子书表达方式
