fall into a flutter

• 心绪不宁,陷于极度紧张

fall into a flutter的用法和样例：

例句

1. His arrival put the girls in a flutter.
   他的到来使她心绪不宁。
2. She put the letter into her pocket and offered her visitor a smile of welcome, exhibiting no trace of discomposure.
   她把信塞在口袋里，向客人发出了欢迎的微笑，没有泄露一丝心绪不宁的痕迹。