To indulge in joyous and incessant singing and dancing; to be deeply immersed in sensual pleasures and revelry.
他沉湎于酣歌恒舞的生活，荒废了学业
He indulged in a life of joyous singing and constant dancing, neglecting his studies.
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To indulge in joyous and incessant singing and dancing; to be deeply immersed in sensual pleasures and revelry.