“竞赛的”的英语可以翻译为：agonistic ...

我们还获得了一次参加有奖智力竞赛的机会，奖品是成箱的啤酒！We've also got a bonus quiz with crates of beer as prizes!将发信通知竞赛的优胜者。Competition winners will be notified by post.那两匹马竞赛的成绩相等.The two horses were even in the race....