好词典
flutter
UK //ˈflʌtə//US //ˈflʌtər//
词源
源自古英语 'floterian'，意为'快速移动'，与古诺尔斯语 'fljóta'（漂浮）相关，可能源自原始日耳曼语词根。
verb
❶ 指物体快速、轻盈地摆动或振动，通常形容翅膀、旗帜等轻薄的物体在空气中飘动。
“The butterfly fluttered its wings and flew away.”
（蝴蝶拍打着翅膀飞走了。）
“The curtains fluttered in the breeze.”
（窗帘在微风中轻轻飘动。）
同义词:flap, wave, quiver, flicker
noun
❶ 指快速、轻盈的摆动或振动状态，也可形容心跳加快或情绪波动。
“There was a flutter of wings as the birds took off.”
（鸟儿起飞时翅膀扑腾了一下。）
“She felt a flutter of excitement before the performance.”
（表演前她感到一阵兴奋。）
同义词:flapping, vibration, tremble, agitation
常见短语
in a flutter — 形容人因紧张、兴奋或焦虑而心神不宁的状态。
“She was in a flutter before her first job interview.”
（她在第一次工作面试前紧张不安。）
flutter by — 指蝴蝶等轻盈地飞过，常带有诗意或浪漫的意味。
“A butterfly fluttered by and landed on the flower.”
（一只蝴蝶轻盈地飞过，落在花朵上。）