水藓

例句：

1. 1. The water moss grows on rocks and in pools.
   水生苔藓生长在岩石和池塘中。
2. 2. The algaes are important for the ecosystem.
   藻类对生态系统非常重要。
3. 3. The moss is a good indicator of the health of the soil.
   苔藓是土壤健康状况的良好指示器。