string(310) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B9%E6%9E%9C%E6%89%8B%E6%9C%BA%E7%BD%91%E9%80%9F%E5%8F%98%E6%85%A2%E7%9A%84%E5%8E%9F%E5%9B%A0%E5%8F%8A%E8%A7%A3%E5%86%B3%E5%8A%9E%E6%B3%95 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
苹果手机网速变慢的原因及解决办法
