three-screen sand

例句：

1. 1. The beach was covered in three-screen sand, making it difficult to walkon.
   海滩上覆盖着三层屏幕的沙子，很难行走。
2. 2. The construction crew usedthree-screen sand to level the landfor the new road.
   施工队使用三层屏幕的沙子来平整土地，为新路做准备。
3. 3. The sandy beach wasa popular spot for families to spend theirsummer vacations.
   这个沙滩是家庭度过暑假的热门地点。