string(306) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E6%B8%85%E7%90%86%E4%BA%86%E7%BC%93%E5%AD%98%E4%BB%8D%E7%84%B6%E5%8D%A0%E4%BA%86%E5%BE%88%E5%A4%A7%E5%86%85%E5%AD%98ios => Failed to connect to 125.88.227.171 port 38062: Connection refused"
抖音清理了缓存仍然占了很大内存ios
