蜗牛

例句：

1. 1. The snail is slowly moving along the shell.
   蜗牛正在壳上缓慢移动。
2. 2. Snails are known for their slow and steady growth.
   蜗牛因其缓慢而稳定的生长而闻名。
3. 3.The snail's shell is a unique adaptation to its environment.
   蜗牛的壳是一种独特的适应其环境的适应方式。