string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%9B%9B%E8%89%B2%E7%AC%94%E8%AE%B0%E6%B3%95%E6%80%8E%E4%B9%88%E5%81%9A => Failed to connect to 14.18.117.71 port 38041: Connection refused"
四色笔记法怎么做
