string(259) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=cpu%E5%92%8C%E6%98%BE%E5%8D%A1%E6%80%A7%E8%83%BD%E5%A4%A9%E6%A2%AF%E5%9B%BE%E5%AF%B9%E6%AF%94 => Failed to connect to 14.18.117.71 port 38093: Connection refused"
cpu和显卡性能天梯图对比
