string(321) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9B%B6%E5%9F%BA%E7%A1%80%E5%AD%A6%E7%94%B5%E8%84%91%E7%9A%84%E5%9F%BA%E6%9C%AC%E7%9F%A5%E8%AF%86%E6%9C%89%E5%93%AA%E4%BA%9B%E5%86%85%E5%AE%B9%E5%91%A2 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
零基础学电脑的基本知识有哪些内容呢
