string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E9%9F%A9%E5%9B%BD%E4%BA%BA%E7%8E%B0%E5%9C%A8%E7%9A%84%E7%94%9F%E6%B4%BB%E6%B0%B4%E5%B9%B3%E5%A6%82%E4%BD%95 => Failed to connect to 14.116.215.7 port 38225: Connection refused"
韩国人现在的生活水平如何
