string(241) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%94%B5%E8%84%91cpu%E6%80%BB%E6%98%AF%E5%8D%A0%E7%94%A8%E8%BF%87%E9%AB%98 => Failed to connect to 14.116.215.7 port 38230: Connection refused"
电脑cpu总是占用过高
