flap
/flæp/
/flæp/
释义
verb拍打，扇动
noun（常指开口处的）口盖，封舌
英英释义
verbto move or to make something move up and down or from side to side
nouna piece of material, paper, etc. that is fixed to something at one side only, often covering an opening (= the space where something opens)
场景例句
- The sails of the boat flapped in the wind.
- The bird flapped its wings.
- the flap of the envelope
词态变化
flap, flaps, flapped, flapping
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