他脸上挂着得意扬扬的笑容。

He had a self-satisfied smirk on his face.

他得意扬扬地挥舞着拳头。

He was punching the air in triumph.

罗伯特正得意扬扬地看着我。

Robert was looking at me triumphantly .

他向后一靠，为自己计划成功而得意扬扬。

He leaned back, exulting at the success of his plan.

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.