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- Mother is all of a flutter because of thunder and lightning. 由于电闪雷鸣，妈妈感到十分不安。
- He varied the transmission frequency. 他变换了无线电传送的频率。
- They unfurled the flag and let it flutter in the wind. 他们将旗展开让其迎风招展。
- That TV play caused a mild flutter among the viewers. 那出电视剧在观众中稍稍引起轰动。
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- There was a flutter of wings among the trees. 树林里响起一阵飞鸟的拍翅声。
- flutter frequency 颤振频率
- He immediately fell into a great flutter. 他立刻变得心慌意乱。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- A fourth model may be tested for flutter speed. 第四个模型可用来进行颤振试验。
- The news caused a flutter among the teaching staff. 这个消息在全体教师中引起了不安。
- His arrival put the girls in a flutter. 他的到来使她心绪不宁。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
- Accidents on that highway are happening with increasing frequency. 那条高速公路上车祸发生得越来越频繁。
- Her heart began to flutter with fear. 她的心因害怕而开始柁柁跳。
- She had found it well to flutter ahead. 她发觉最好的办法是曲线前进。
- Our surprise attack put the enemy into a flutter. 我们的奇袭使敌人张皇失措。
- I always have a flutter on the Grand National. 我总是在利物浦一年一度的障碍赛马上下小赌注。
- A heart flutter means heart failure. 对他来说，心脏扑动就是心脏症。
- He tuned his radio to the police frequency. 他把无线电调到警方的频率。
