sound of something in rapid motion
同义词:whir??/??whirring??/??birr
make a soft swishing sound
同义词:whizz??/??whiz??/??whir??/??birr??/??purr
make a vibrant sound, as of some birds
同义词:churr
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。