string(267) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%8B%B9%E6%9E%9C11%E4%BB%80%E4%B9%88%E6%97%B6%E5%80%99%E5%BC%80%E5%A7%8B%E5%8F%91%E8%A1%8C%E7%9A%84 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
苹果11什么时候开始发行的
