水息虫

例句：

1. 1. The water snail is a fascinating creature that lives in freshwater habitats.
   水蜗牛是一种令人着迷的生物，生活在淡水栖息地。
2. 2. The water snail has a unique ability to retract its body into its shell for protection.
   水蜗牛有一种独特的能力，可以将身体缩回到壳中以保护自己。
3. 3. The water snail's shell is made of calcium carbonate, which makes it strong and durable.
   水蜗牛的壳是由碳酸钙制成的，这使得它既坚固又耐用。