他说着，意识到这太讽刺，忧郁的脸上泛过一丝尴尬的笑容。

As he talks, he recognises the irony of the story and his melancholic face breaks into a quick laugh.

youdao

他的脸上露出尴尬的笑容。

There's an embarrassed smile on his face.

youdao

老夫妇听着他发表高论，既不表示同意，也不收起脸上的笑容，小心地不让陌生人感到尴尬。

The old couple listened, neither agreeing with the man nor withdrawing their smiles, careful not to embarrass a stranger.

youdao

And this is why the humor-- why the damage is often a certain sort of damage involving things like embarrassment, sex, scatology, a banana peel, pie in the face, your pants fall down or something, where there's no real harm.

这就是为什么幽默-,所涉及的伤害通常都是,涉及尴尬，性，不雅语言，香蕉皮，摔到脸上的派，掉裤子之类的，这些情况没有造成真正伤害。

耶鲁公开课 - 心理学导论课程节选