swing up saw

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 swing is swaying back and forth.
   秋千在来回摆动。
3. 3. The boat sways back and forth as it rocks on the waves.
   小船随着波浪起伏摇摆。