a continuous series of rapid beats on a drum, often to introduce an announcement or event He could play flamboyant drum rolls, but lacked the ability to hold a simple beat. 他可以演奏华丽的鼓声，但缺乏保持简单节奏的能力。 - (figurative)
There were drum rolls and fireworks as she launched her mayoral campaign. 她发起市长竞选活动时，有鼓声和烟花。