string(276) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%89%AF%E8%AF%8D%E4%BF%AE%E9%A5%B0%E5%8A%A8%E8%AF%8D%E6%97%B6%E5%81%9A%E4%BB%80%E4%B9%88%E6%88%90%E5%88%86 => Failed to connect to 101.89.159.206 port 38087: Connection refused"
副词修饰动词时做什么成分
