string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E6%80%9D%E7%BB%B4%E5%AF%BC%E5%9B%BE%E4%B8%AD%E5%81%9A%E7%AC%94%E8%AE%B0%E5%8F%AF%E4%BB%A5%E5%90%97 => Failed to connect to 101.89.117.144 port 38208: Connection refused"
注会思维导图中做笔记可以吗
