string(249) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8E%A8%E5%B9%BF%E5%AE%A3%E4%BC%A0%E7%9A%84%E6%96%B9%E5%BC%8F%E5%8C%85%E6%8B%AC => Failed to connect to 101.89.143.195 port 38205: Connection refused"
推广宣传的方式包括
