蜗

例句：

1. 1.The snail is slowly moving its shell across the sand.
   蜗牛正在慢慢地把壳移动到沙子上。
2. 2.The snail's shell is a unique feature of its body.
   蜗牛的壳是它身体的一个独特特征。
3. 3. Snails are known for their ability to survive in water and on land.
   蜗牛因其能在水和陆地上生存的能力而闻名。