string(250) "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%E5%88%B6%E4%BD%9C%E6%96%B9%E6%B3%95%2C%E9%9B%B6%E5%9F%BA%E7%A1%80 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
表格制作方法,零基础
