摆子

例句：

1. 1. The boat was rocking back and forth in the waves.
   船在波浪中左右摇摆。
2. 2. The swings at the park were so much fun for the kids.
   公园里的秋千对孩子们来说太好玩了。
3. 3. The old house had a lot of wooden beams that creaked when they were moved.
   那所旧房子有很多木梁，当它们被移动时会发出吱吱声。