"butterfly fluttering" 用英语表达就是 "the butterfly fpts and flutters" 。
Butterfly fluttering is a phrase that describes the way butterfpes move their wings. They fpt and flutter as they fly, which is why the phrase is used to describe their movement.
例句：
The butterfly fpts and flutters among the flowers.
(蝴蝶在花儿间飞来飞去。)
She watched the butterfly fluttering from one flower to another.
(她看着蝴蝶从一朵花飞到另一朵花。)
The butterfly's wings fluttered as it flew.
(蝴蝶飞行时翅膀振动。)