v.(使)上下左右移动( flap的过去式和过去分词 );轻拍;焦急,焦虑;振(翅);
例句:
The flags in the stadium flapped in the wind.
运动场上的旗子在风中飘扬.
His sleeves flapped over spare burnt arms.
他的两只衣袖在他那晒黑的瘦胳膊上啪哒啪哒飘动.
The large bird flapped its wings.
那只大鸟拍打着翅膀.