出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第11页（234字）
以前的一切努力完全白费，例你尚差一年就大学毕业，若现在辍学，岂非前功尽弃?
With only a year to go before you gradu·ate from university，it would be a pity to leave now and have nothing to show for all your previous effoits