string(277) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%B1%86%E8%8A%BD%E7%9A%84%E7%94%9F%E9%95%BF%E8%BF%87%E7%A8%8B%E8%A7%82%E5%AF%9F%E6%97%A5%E8%AE%B07%E5%A4%A9 => Failed to connect to 125.88.227.171 port 38114: Connection refused"
豆芽的生长过程观察日记7天
