sand yard

例句：

1. 1. The children were playing in thesand yard.
   孩子们在沙坑里玩耍。
2. 2. Thesand yard is a popular spot for picnics.
   沙坑是野餐的热门地点。
3. 3.The sand yard was filled with colorful sandcastles.
   沙坑里堆满了五颜六色的沙堡。