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1·They were bitterly disappointed at the result of the game.

他们对比赛结果极为失望。《牛津词典》

2·He was disappointed at not getting the job, but he'll get over it.

他没得到这份工作非常失望，不过他会想得开的。《牛津词典》

3·I was relieved and disappointed at the same time.

我放心了，同时也感到失望。

4·We were all disappointed at what the boy said.

我们都对那个男孩说的话感到失望。

5·I was disappointed at the news.

听到这个消息我感到很失望。

6·I'm disappointed at your attitude.

我对你的态度有些失望。

7·We were disappointed at his words.

听了他的话，我们很失望。

8·The boy felt disappointed at the match.

那男孩对那场比赛感到失望。

9·She was disappointed at losing the race.

比赛输了，她很沮丧。

10·The teacher is disappointed at my answer.

老师对我的答案感到失望。