词汇解析：
1、refree
n. 裁判；主裁判。
As soon as the refree ended the match. hundreds of thousands of Iraqi all over the globe were out in the street partying the joy of the victory.
当裁判宣布比赛结束，全球数十万伊拉克人涌上街头庆祝胜利的喜悦。
2、unfree
adj.不自由的。
Unfree countries rarely develop lifestyles that are envied abroad.
缺乏自由的国家很少会发展出让外国人羡慕的生活方式。
3、carefree
adj.无忧无虑的，快乐舒畅的；逍遥自在；宽畅；闲逸。
She had made their childhood so joyous and carefree.
她使他们的童年充满欢乐，无忧无虑。
4、costfree
n. 免费。
As long as they remain rhetorical, they are cost free.
只要停留在口头上，他们就不需要付出代价。
5、referee
n.裁判员；证明人；公断人；（专业性强的文章的）审阅人。
vi.担任裁判。
The match will be refereed by Derek Bevan from Wales
这场比赛将由来自威尔士的德里克·贝文执法。