flap

拍动，拍打

焦虑；紧张

拍击声

拍打

垂下物；口袋盖

不安；激动

flap

拍打, 拍打声, 副翼

拍打, 鼓翼而飞, 飘动, 拉下(帽)的边, 扔, 掷

flap

1. any broad thin and limber covering attached at one edge; hangs loose or projects freely; "he wrote on the flap of the envelope"

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2. an excited state of agitation; "he was in a dither"; "there was a terrible flap about the theft"

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3. the motion made by flapping up and down

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4. a movable piece of tissue partly connected to the body

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5. a movable airfoil that is part of an aircraft wing; used to increase lift or drag

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1. move in a wavy pattern or with a rising and falling motion; "The curtains undulated"; "the waves rolled towards the beach"

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2. move noisily; "flags flapped in the strong wind"

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3. move with a thrashing motion; "The bird flapped its wings"; "The eagle beat its wings and soared high into the sky"

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4. move with a flapping motion; "The bird's wings were flapping"

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5. make a fuss; be agitated

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6. pronounce with a flap, of alveolar sounds

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