They shouldn't be disappointed or let their heads fall, but walk tall.

他们不应该失望或垂头丧气，而应该昂首阔步。

《柯林斯英汉双解大词典》

If we look to the inherited leadership and power, we will continue to be disappointed and frustrated with our failure to fix the economy.

如果我们指望继承的领导力与权力，我们将继续对我们未能修复经济感到失望和沮丧。

youdao

Don't raise your hopes too high, or you may be disappointed.

不要希望过高，否则你可能会失望的。

《牛津词典》

The exhibition's curator, Nick Bonner, is disappointed the North Koreans will not be allowed to explain their work.

VOA: standard.2009.12.09

We could no longer be disappointed, because to be disappointed in something presupposes that it could've been some other way.

我们不会再感到失望，因为对某些事情失望就表明,事情可以是另一个样子。

耶鲁公开课 - 死亡课程节选

"I'm disappointed in the people who claim to be the leaders of the right-wing constituency in the country.

VOA: standard.2009.12.10

Investors seem to be disappointed that there was no leadership change over the weekend.

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Better informed consumers are less likely to be disappointed, and more forgiving if they are.

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If you come up with ambitious goals, investors will be disappointed when you don't meet them.

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