string(255) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%9A%82%E8%9A%81%E6%A3%AE%E6%9E%97%E8%83%BD%E9%87%8F%E8%AE%A1%E7%AE%97%E6%96%B9%E6%B3%95 => Failed to connect to 14.18.46.51 port 38044: Connection refused"
蚂蚁森林能量计算方法
