string(312) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BF%90%E7%94%A8%E5%9B%B4%E7%BB%95%E4%B8%AD%E5%BF%83%E6%84%8F%E6%80%9D%E5%86%99%E7%9A%84%E6%96%B9%E6%B3%95%E5%86%99%E4%B8%80%E6%AE%B5%E8%AF%9D => Failed to connect to 101.89.117.144 port 38056: Connection refused"
运用围绕中心意思写的方法写一段话
