全都卖完了，我感到很失望。

I'm disappointed (that) it was sold out.

《牛津词典》

看到她没来参加晚会，他感到很失望。

He was disappointed to see she wasn't at the party.

《牛津词典》

他们发现渡船已经离开，感到很失望。

They were dismayed to find that the ferry had already left.

《牛津词典》

Women became very upset about this and advocacy groups like the breast cancer advocacy groups got involved and really pressured the government to do more studies on women.

女性对此感到很失望,而各类倡议团体,像是乳癌倡议团体开始进行干预,并给政府施压,要求进行更多针对女性的研究

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and I was really disappointed with the results.

对自己的成绩感到很失望。

I think 实战 - SpeakingMax英语口语达人

I am upset that one cannot easily download 'Buffy the Vampire Slayer' through iTunes."

无法从iTunes上,轻松下载《吸血猎人巴菲》,让我感到很失望

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