tombolo cluster

例句：

1. 1. The children were playing with their marbles in the park.
   孩子们在公园里玩他们的弹珠。
2. 2. The toy storehad a lot of toys for sale,including some tombolo clusters.
   玩具店有很多出售的玩具，包括一些弹珠群集。
3. 3. The kids loved collecting tombolo clusters from the beach.
   孩子们喜欢从海滩上收集弹珠群集。