to expand and contract in a rhythmic mannerthe heart muscle pulsates regularly to pump blood
the heart muscle pulsates regularly to pump blood
beat, palpitate, pit-a-pat, pitter-patter, pulse, throb
fluctuate, oscillate, vibratequiver, tremble
in 1744
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。