string(265) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BA%A2%E6%9D%89%E8%B5%84%E6%9C%AC%E5%92%8C%E9%BB%91%E7%9F%B3%E5%93%AA%E4%B8%AA%E5%8E%89%E5%AE%B3 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
红杉资本和黑石哪个厉害
