conker

例句：

1. 1. The conkers were scattered on the ground.
   坚果散落在地上。
2. 2. He ate a lot of conkers for breakfast.
   他早餐吃了很多坚果。
3. 3. Conkers are a popular snack in many parts of the world.
   坚果是世界上许多地方的流行零食。