string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E7%BE%8E%E8%81%94%E5%82%A8%E5%87%8F%E5%B0%91%E8%B4%AD%E4%B9%B0%E5%9B%BD%E5%80%BA => Failed to connect to 101.89.143.195 port 38205: Connection refused"
美联储减少购买国债
