flutter

1. V-T/V-I If something thin or light flutters, or if you flutter it, it moves up and down or from side to side with a lot of quick, light movements. 拍動(dòng); 飄動(dòng)

Her chiffon skirt was fluttering in the night breeze. 她的薄綢裙在晚風(fēng)中飄動(dòng)。

...a butterfly fluttering its wings. …一只拍動(dòng)著翅膀的蝴蝶。

2. N-COUNT Flutter is also a noun. 飄動(dòng); 拍動(dòng)

...a flutter of white cloth. …白布的飄動(dòng)。

3. V-I If something light such as a small bird or a piece of paper flutters somewhere, it moves through the air with small quick movements. 飄舞; 振翅

The paper fluttered to the floor. 紙飄落到地板上。