跷跷板

例句：

1. 1.I like to play on the swings at the park.
   我喜欢在公园的秋千上玩耍。
2. 2. The children were having a great time on the swings.
   孩子们在秋千上玩得很开心。
3. 3. The old lady was sitting on the swings, enjoying the sunshine.
   老妇人坐在秋千上，享受着阳光。