flutter

verb

1. （使）飘动，挥动，颤动
   to move lightly and quickly; to make sth move in this way
   1. Flags fluttered in the breeze.
      旗帜在微风中飘扬。
   2. Her eyelids fluttered but did not open.
      她的眼皮动了一下，但没有睁开眼。
   3. He fluttered his hands around wildly.
      他拼命挥舞着双手。
   4. She fluttered her eyelashes at him (= tried to attract him in order to persuade him to do sth) .
      她向他眨眼睛。
2. （鸟或昆虫）拍（翅），振（翅），鼓（翼）
   when a bird or an insect flutters its wings, or its wings flutter , the wings move lightly and quickly up and down
3. 飞来飞去；翩翩飞舞
   to fly somewhere moving the wings quickly and lightly
   1. The butterfly fluttered from flower to flower.
      蝴蝶在花丛中飞来飞去。
4. 怦怦乱跳；扑腾
   to beat very quickly and not regularly
   1. I could feel a fluttering pulse.
      我感到脉搏跳动。
   2. The sound of his voice in the hall made her heart flutter.
      他在大厅中讲话的声音使她的心怦怦直跳。

noun

1. 振动；飘动；挥动；颤动
   a quick, light movement
   1. the flutter of wings
      翅膀的拍动
   2. with a flutter of her long, dark eyelashes
      她那长长的黑睫毛扑闪了一下
   3. to feel a flutter of panic in your stomach
      胸中感到一阵恐慌
2. 小赌注
   a small bet
   1. to have a flutter on the horses
      赛马中下小赌注
3. 紧张兴奋；慌乱
   a state of nervous or confused excitement
   1. Her sudden arrival caused quite a flutter.
      她的突然来到引起一片慌乱。
4. （心脏的）怦怦乱跳，扑腾
   a very fast heartbeat , caused when sb is nervous or excited
   1. Her heart gave a flutter when she saw him.
      她见到他时心怦怦乱跳。
5. 扑动；快速的颤动（或搏动）
   a medical condition in which you have a fast, unsteady heartbeat
6. （重放录音的）颤振
   rapid changes in the pitch or volume of recorded sound

1. V-ERG 颤动;飘动;挥动
   If something thin or light flutters, or if you flutter it, it moves up and down or from side to side with a lot of quick, light movements.
   1. Her chiffon skirt was fluttering in the night breeze.
      她的雪纺裙在晚风中飘动着。
   2. ...a butterfly fluttering its wings.
      挥动着翅膀的蝴蝶
   3. ...the fluttering white lace handkerchief.
      飘动的白色蕾丝手绢
   4. Flutter is also a noun.
      
   5. ...a flutter of white cloth.
      飘扬的白布
2. VERB (小鸟)振翅飞翔;(纸片)飘飞，翩翩飞舞
   If something light such as a small bird or a piece of paper flutters somewhere, it moves through the air with small quick movements.
   1. The paper fluttered to the floor...
      纸飘落到地板上。
   2. The birds were active, whirring and fluttering among the trees.
      鸟儿们很活跃，在树林中呼呼地飞来飞去。
3. N-COUNT 小赌注
   If you have a flutter, you have a small bet on something such as a horse race.
   1. I had a flutter on five horses.
      我在5匹马身上下了小赌注。
4. VERB 匆忙急赶;奔走
   If you say that someone flutters somewhere, you mean that they walk there with quick, light movements, often in a silly way or in a way which suggests that they are nervous.
   1. She'd been fluttering about in the kitchen.
      她一直在厨房里忙前忙后。
5. VERB (心)扑通扑通地跳，怦怦直跳
   If your heart or stomach flutters, you experience a strong feeling of excitement or anxiety.
   1. The look in his eyes made my heart flutter.
      他的眼神让我心里扑通扑通直跳。

1. Her chiffon skirt was fluttering in the night breeze.
   她的雪纺裙在晚风中飘动着。
2. The paper fluttered to the floor
   纸飘落到地板上。
3. The birds were active, whirring and fluttering among the trees.
   鸟儿们很活跃，在树林中呼呼地飞来飞去。
4. She'd been fluttering about in the kitchen.
   她一直在厨房里忙前忙后。
5. The look in his eyes made my heart flutter.
   他的眼神让我心里扑通扑通直跳。
6. Our surprise attack put the enemy into a flutter.
   我们的奇袭使敌人张皇失措。
7. Snowflakes flutter about.
   雪片纷飞。
8. Snowflakes flutter in the air.
   飞雪花了。
9. Red flags flutter on both sides of the rostrum.
   主席台左右，红旗迎风飘扬。
10. Vibration test, wind tunnel flutter test and the corresponding calculation are conducted.
    风洞颤振试验和计算分析。
11. I am not sad, there is another happiness and joy of flutter in my heart.
    我不悲伤，心情里多了份快乐和飘舞的乐趣。
12. I want to be a flag, no wind, no flutter.
    我想做到像一面旗帜，没有风也没有飘扬的心情。
13. A fourth model may be tested for flutter speed.
    第四个模型可用来进行颤振试验。
14. Non-linear Dynamics and Control of Flutter of Airfoil
    机翼颤振的非线性动力学和控制研究
15. Identification of flutter derivatives is an attractive topic in the field of wind-resistance study of long-span bridges.
    气动导数识别是大跨度桥梁抗风研究中备受关注的一个问题。
16. The properties of bifurcation points of airfoil flutter with cubic nonlinearity in incompressible flow are studied.
    对定常空气动力作用下、含立方非线性刚度的二元机翼颤振系统的分叉点进行了研究。
17. They unfurled the flag and let it flutter in the wind.
    他们将旗展开让其迎风招展。
18. We present a method of analyzing flutter characteristics of wing with nonlinear stiffness in supersonic flow.
    提出了带结构刚度非线性的超音速弹翼的颤振分析方法。
19. Research on Analysis of Flutter Suppression Based on Aerodynamic Control
    基于气动力控制的颤振抑制分析研究
20. The nonlinear flutter calculation demonstrates the validity of the presented method.
    机翼的非线性颤振计算表明了方法的有效性。
21. The director's threat to resign caused a flutter of speculation among the shareholders.
    该董事的辞职威胁在股东中引起了猜测。
22. The Research on Flutter Derivatives of Long-span Bridges Based on CFD and System Identification Theory
    基于CFD和系统辨识理论的大跨桥梁颤振导数识别研究
23. The accuracy of flutter analysis improved by this method is much higher than that obtained by the piston theory.
    特别是和用活塞理论所做的颤振分析相比，计算精度有了明显提高。
24. A direction derivative method for the analysis of the effects of asymmetric stores on flutter speed is presented.
    提出了一种分析不对称外挂对飞机颤振影响的方向导数法。
25. This was the Angel of History! We felt its wings flutter through the room.
    这真是历史的天使降临了！我们感到她在我们房间里振翅鼓翼的声音。
26. Analysis of the stall flutter and results are emphasized.
    文中着重对失速颤振现象及结果作了分析。
27. The effect of small radial stagnation pressure distortion of inlet flow on the stall flutter has been investigated experimentally.
    对进口流场畸变失速颤振的影响进行了实验研究。
28. This article presents a preliminary method of probabilistic robust flutter analysis subject to small flutter risks.
    针对小风险颤振定量分析，提出一种概率鲁棒颤振初步分析方法。
29. Flutter stability is one of major factors governing the design of long span suspension bridges.
    颤振稳定性已成为影响和控制大跨径悬索桥设计的一个重要问题。

  beat flutter pound pulsate thump【导航词义：跳动；拍动】

  beat v. （心脏）跳动；拍动（翅膀）

〔辨析〕尤指心脏有规律地跳动，或指鸟类有节奏地拍打翅膀。

  flutter v. 拍打（翅膀），振（翼）

〔辨析〕特指鸟儿或有翅膀的昆虫快速而轻轻地振动翅膀。

  pound v. （心脏）狂跳；连续重击

〔辨析〕指激动、生气、愤怒等时心脏剧烈地跳动；也指使劲地连续击打。

  pulsate v. 搏动，跳动

〔辨析〕指心脏、动脉等有规律地振动或有节奏地舒张和收缩。

  thump v. （心脏）怦怦地跳

〔辨析〕指因恐惧或激动而心脏怦怦直跳。

noun

1. the act of moving back and forth

   Synonym:    waverflicker

2. the motion made by flapping up and down

   Synonym:    flapflappingfluttering

3. a disorderly outburst or tumult
   1. they were amazed by the furious disturbance they had caused

   Synonym:    disturbancedisruptioncommotionhurly burlyto-dohoo-hahoo-hahkerfuffle

4. abnormally rapid beating of the auricles of the heart (especially in a regular rhythm)

verb

1. wink briefly
   1. bat one's eyelids

   Synonym:    bat

2. move back and forth very rapidly
   1. the candle flickered

   Synonym:    flickerwaverflitterquiver

3. beat rapidly
   1. His heart palpitated

   Synonym:    palpitate

4. move along rapidly and lightly
   1. The hummingbird flitted among the branches

   Synonym:    flitfleetdart

5. flap the wings rapidly or fly with flapping movements
   1. The seagulls fluttered overhead