吃透英语课本，提升在校竞争力
v. 拍动；摆动；轻拍
n. 拍动；薄片；焦虑；紧张
现在分词：flapping
第三人称单数：flaps
过去式：flapped
过去分词：flapped
The sails flapped in the breeze.
风帆在微风中摆动。
A loose flap of skin covered the wound.
伤口上覆盖着一片快要脱落的皮。
the flap of the sails
船帆的拍动
...a kid running and flapping her arms.
…一个边跑边像小鸟一样上下扇动着双臂的小女孩。
The flags were flapping in the breeze.
旗帜在微风中飘扬。
flap valve
瓣阀；片状阀
flap wheel
翼片砂轮
valve flap
阀瓣
flap gate
铰链式闸门；舌瓣闸门；翻转板
skin flap
皮瓣
pocket flap
袋盖
vi.拍动；鼓翼而飞；（帽边等）垂下
hang
n.拍打，拍打声；[航]副翼
aileron
vt.拍打；扔；拉下帽边；飘动
wash
throw into
