- twenty-one
 - ['twenti'wʌn]
 - num. 二十一
n. 二十一点纸牌游戏
adj. 二十一的 
参考例子
           - 1.They are now thirteen to twenty-one years old.
 - 他们现在已经是十三至二十一岁了。
 
- 2.You lost by only a hundred and twenty-one votes.
 - 你仅仅以一百二十一票的些微差距输了。
 
- 3.He noticed that the clock on the mantelpiece said nine, meaning twenty-one.
 - 他注意到壁炉架上的座钟已是九点了,那就是说二十一点。
 
英文解释
           - n.
 - 1.the cardinal number that is the sum of twenty and one
 - 2.a gambling game using cards; the object is to hold cards having a higher count than those dealt to t
 
- adj.
 - 1.being one more than twenty
 
网络释义
               - TWENTY-ONE
 - 帅帅的怪叔叔; 帅帅的怪叔叔...; 二十一个; 计谋;
 
- Unit Twenty-One
 - 流行话题; 体育运动与业余爱好;
 
- SCENE TWENTY-ONE
 - 帅帅的怪叔叔;
 
- twenty-one boys
 - 个男孩;
 
- twenty-one bags
 - 二十一只书包;