White clouds flutter in the blue sky.
蓝蓝的天上白云飘。
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。
Some research show the lowest flutter critical wind speed may occur in skew wind case.
有关研究显示桥梁最低颤振临界风速可能发生在平均风与桥跨成某一偏角的斜风情况。
She was in a great flutter about traveling by airplane.
她对于乘飞机旅行感到紧张。
No. They flutter around in a circle.
都不对，他们只是在一个圈内拍打翅膀。
No. They flutter around in a circle.
都不对，他们只是在一个圈内拍打翅膀。
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