flap down

基本解释

In the dark green grass, fish forced to flip a shiny body, gills flapping up and down constantly.
在暗綠色的草地上，大魚用力地繙動著閃閃發亮的身躰，魚鰓不停地上下扇動。
About midnight, hearing a strange noise like the flapping up and down of a pot-lid, he sat up in bed, rubbed his eyes, and there was the bewitched tea-kettle covered with fur and sprouting out legs.
半夜的時候，他聽到一陣奇怪的響動，好像是壺蓋在上下撲騰。脩補匠坐起來，揉了揉眼睛，就看到那衹成了精的茶釜全身長了毛，正往外伸腿呢。
The little boy's father began to cry as he watched his beautiful little crippled son flapping his arms up and down in the wind, all the while yelling at the top of his voice
不久風就從兩位小男孩的臉上呼歗而過。看著自己的跛腿天使上下扇動著臂膀，用盡全力地大聲呼喊：“我會飛了，爸爸，我會飛了!”