1、dan，英 [dæn] 美 [dæn] n.(空手道或柔道的)段;(空手道或柔道的)入段选手。

2、Shes going out with Dan? Youre joking! 她在同丹谈恋爱？你是在开玩笑吧！

3、Dan rolled up his sleeves and washed his hands. 丹挽起袖子洗了洗手。