string(284) "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%E6%98%AF%E4%BB%80%E4%B9%88%E6%97%B6%E5%80%99%E4%B8%8A%E5%B8%82%E7%9A%84%E5%9C%A8%E4%B8%AD%E5%9B%BD => Failed to connect to 14.18.46.51 port 38044: Connection refused"
苹果11是什么时候上市的在中国
