string(300) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%AC%94%E8%AE%B0%E6%9C%AC%E5%85%B3%E6%9C%BA%E6%97%B6%E9%9C%80%E8%A6%81%E6%8B%94%E7%94%B5%E6%BA%90%E5%90%97%E4%B8%BA%E4%BB%80%E4%B9%88 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
笔记本关机时需要拔电源吗为什么
