1．profession n．(需要高等教育和训练的)专业，行业→professional adj.专业的
2．previous adj.以前的，先前的→previously adv.以前，先前
3．quit v．离开(工作岗位、学校等)；离任→quitter n．有始无终的人
profession n．专业，行业；同业，同行；表白，声明
①The medical profession is always telling us we should exercise more.
同业，同行
②Does she really think of adopting teaching as a profession？
专业，行业
③He made a profession of friendship to his classmate Mary.
表白，声明
