string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BD%91%E7%BB%9C%E5%B8%A6%E5%AE%BD%E8%B6%8A%E9%AB%98%E4%B8%8A%E7%BD%91%E9%80%9F%E5%BA%A6%E8%B6%8A%E5%BF%AB%E5%AF%B9%E4%B8%8D%E5%AF%B9%E5%91%A2 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
网络带宽越高上网速度越快对不对呢
