string(243) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cpu%E6%80%A7%E8%83%BD%E9%AB%98%E4%BD%8E%E4%BD%93%E7%8E%B0%E5%9C%A8%E5%93%AA => Failed to connect to 101.89.159.206 port 38075: Connection refused"
cpu性能高低体现在哪
