string(285) "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%E6%8A%95%E8%B5%84%E4%BA%86%E5%A4%9A%E5%B0%91%E5%85%AC%E5%8F%B8%E8%82%A1%E7%A5%A8 => Failed to connect to 101.89.159.206 port 38100: Connection refused"
红杉资本投资了多少公司股票
