string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%A1%A8%E6%A0%BC%E6%A0%87%E9%A2%98%E6%A0%BC%E5%BC%8F%E6%80%8E%E4%B9%88%E5%90%88%E5%B9%B6 => Failed to connect to 101.89.159.206 port 38075: Connection refused"
表格标题格式怎么合并
