flutter amplitude

例句：

1. 1.
   鸟的
2. 2.
   使某物
3. 3.
   使某物
4. 4.
   使某物
5. 5.
   使某物
6. 1. The butterfly's wings fluttered in the breeze.
   蝴蝶的翅膀在微风中扑动。
7. 2. The tree swayed gently in the wind.
   这棵树在风中轻轻摇摆。
8. 3. The bird fluttered its wings nervously.
   那只鸟紧张地扑动着翅膀。
9. 4. The leaves quivered as a gentle breeze passed by.
   一阵温柔的风吹过时，树叶轻轻颤抖。
10. 5. The guitar strings vibrated with every note.
    吉他的弦随着每一个音符震动。