warm water sphere

例句：

1. 1.The children gathered around the warm water sphere to play with it.
   孩子们围着温暖的水球玩耍。
2. 2.In the winter, they used warm water spheres to keep themselves warm.
   冬天，他们用温暖的水球来保暖。
3. 3.The warm water sphere was a popular attraction at the amusement park.
   在游乐园，温暖的水球是一个受欢迎的景点。