沙堆

例句：

1. 1. The children were playing inthe sand pile.
   孩子们在沙堆里玩耍。
2. 2. The construction crew was working on asand mound.
   建筑工人正在建造一个沙堆。
3. 3. The sand stack is a popularspot for picnicking.
   沙堆是野餐的热门地点。