string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B8%B2%E6%9F%93%E5%92%8C%E5%90%8E%E6%9C%9F%E7%9A%84%E5%8C%BA%E5%88%AB%E6%98%AF%E4%BB%80%E4%B9%88%E5%91%A2 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
渲染和后期的区别是什么呢
