上下晃动

例句：

1. 1. The tree sways gently in the breeze.
   这棵树在微风中轻轻摇摆。
2. 2. The boat sways slightly as it glides across the water.
   小船在水面上微微晃动。
3. 3. The crowd sways to the rhythm of the music.
   人群随着音乐的节奏摇摆。