@property<EOL><INDENT>@check_soup('<STR_LIT>')<EOL>def description(self):<DEDENT>
desc = self.soup.find('<STR_LIT>', class_='<STR_LIT>').text<EOL>return desc<EOL>
获取话题描述信息.

        :return: 话题描述信息
        :rtype: str