second adj.第二的；次等的；再一个的num.第二n.片刻；秒adv.第二；其次v.支持；赞成；附和；调派
双语例句
Papers should not simply distill information from other secondary studies since the point of this exercise is to give students experience in doing first-hand historical research. 论文不能只简单提取第二手研究的信息，因为这作业的重点是要学生得到第一手历史研究的经验。
