She minced across the slippery floor in her high heels, taking tiny careful steps.

minced 是动词 mince 的过去式。mince 本意是"切碎、剁碎"，引申为"用小碎步走路"，形容人走路时迈着非常小且谨慎的步子，通常是因为穿着高跟鞋或地面湿滑而格外小心。