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n. 摆动, 鼓翼, 烦扰
vi. 摆动, 鼓翼, 烦扰
vt. 拍(翅), 使焦急
[计] 颤动

n. abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block
v. flap the wings rapidly or fly with flapping movements

过去式: fluttered 现在分词: fluttering 过去分词: fluttered 第三人称单数: flutters 复数: flutters