string(244) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=2021%E4%B8%80%E5%BB%BA%E6%9C%BA%E7%94%B5%E5%9B%9B%E8%89%B2%E7%AC%94%E8%AE%B0 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
2021一建机电四色笔记
