to expand and contract in a rhythmic mannerher heart pit-a-patted with surprise
her heart pit-a-patted with surprise
beating, palpitating, pitter-pattering, pulsating, pulsing, throbbing
fluctuating, oscillating, vibratingquivering, trembling
英语同义词词典收录了63618条英语词条,基本涵盖了全部常用同义词或反义词的辨析及翻译,是英语学习的有利工具。