string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%90%88%E5%B9%B6%E5%8D%95%E5%85%83%E6%A0%BC%E6%97%B6%E4%BF%9D%E7%95%99%E6%89%80%E6%9C%89%E5%86%85%E5%AE%B9%E6%80%8E%E4%B9%88%E8%AE%BE%E7%BD%AE => Failed to connect to 14.18.117.71 port 38069: Connection refused"
合并单元格时保留所有内容怎么设置
