sandcay

例句：

1. 1. The soldier used a sandcay to protect himself from the bullets.
   士兵用一个沙袋保护自己免受子弹的伤害。
2. 2. The old man carried a sandcay on his back as he walked along the beach.
   老人背着一个沙袋沿着海滩散步。
3. 3. The children were playing with sandcays in the sandbox.
   孩子们在沙箱里玩着沙袋。