to move quickly and lightly
The flag began to flutter in the wind.
旗幟開始在風中飄揚。
to move wings quickly up and down
The bird's wings flutter as it takes off.
鳥兒起飛時翅膀快速拍動。
to fly with quick wing movements
The butterfly will flutter around the garden.
蝴蝶會在花園裡翩翩飛舞。
to beat quickly and unevenly
His heart started to flutter with nervousness.
他因緊張而心跳加速。
a quick, light movement
A gentle flutter of leaves fell from the tree.
樹葉輕輕飄落下來。
a small bet
He placed a flutter on the game.
他在比賽上下了一個小賭注。
a state of nervous excitement
She was in a flutter before her speech.
她在演講前處於緊張興奮的狀態。
a fast, uneven heartbeat
A sudden flutter made her catch her breath.
突然的心悸讓她屏住了呼吸。
an unsteady heartbeat condition
The doctor detected a flutter during the checkup.
醫生在檢查時檢測到心律不整。
rapid changes in sound pitch or volume
The recording had a noticeable flutter in the audio.
錄音中的音頻有明顯的顫動。