string(301) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BC%80%E4%B8%80%E4%B8%AA%E5%8D%96%E8%8C%B6%E5%8F%B6%E7%9A%84%E5%BA%97%E9%9C%80%E8%A6%81%E6%8A%95%E8%B5%84%E5%A4%9A%E5%B0%91%E9%92%B1 => Failed to connect to 14.18.117.71 port 38041: Connection refused"
开一个卖茶叶的店需要投资多少钱
