string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%BB%80%E4%B9%88%E5%8F%AF%E4%BB%A5%E4%BB%A3%E6%9B%BF%E7%94%9F%E7%B2%89%E5%92%8C%E6%B7%80%E7%B2%89%E4%B8%80%E8%B5%B7%E7%94%A8 => Failed to connect to 101.89.117.144 port 38022: Connection refused"
什么可以代替生粉和淀粉一起用
