string(259) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%89%8B%E6%9C%BA%E5%85%85%E7%94%B5%E5%BE%88%E6%85%A2%2C%E8%80%97%E7%94%B5%E5%BE%88%E5%BF%AB => Failed to connect to 14.18.117.71 port 38220: Connection refused"
手机充电很慢,耗电很快
