看到竞争对手失败后，他忍不住得意洋洋地炫耀起来。
He couldn't help but ___gloat when he saw his rival fail.
她在对手犯错后幸灾乐祸地笑了。
She ___gloated when her opponent made a mistake.
他得意洋洋地看着自己赢来的奖杯。
He couldn't stop ___gloating over the trophy he had won.
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