string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%94%AE%E7%9B%98%E9%94%81%E4%BD%8F%E4%BA%86%E6%8C%89fn%E5%8A%A0%E4%BB%80%E4%B9%88%E9%94%AE => Failed to connect to 14.18.117.71 port 38093: Connection refused"
键盘锁住了按fn加什么键
