他脸上挂着得意扬扬的笑容。

He had a self-satisfied smirk on his face.

《牛津词典》

苏珊获奖后，回到了家里，一副得意扬扬的样子。

When she won the prize, Susan went home looking like the cat that swallowed the canary.

youdao

苏珊获奖后，回到了家里，一副得意扬扬的样子。

When Susan got the award and backed to home, she looked like the cat that ate the canary.

youdao