digestive ferment

例句：

1. 1. The digestive system is responsible for breaking down food into nutrients.
   消化系统负责将食物分解为营养物质。
2. 2. Fermentation is a natural process that occurs in the body when we eat or drink.
   发酵是一种自然过程，当我们吃东西或喝水时会发生。
3. 3.The digestive enzymes in our stomach help break down carbohydrates and proteins.
   我们胃中的消化酶帮助我们分解碳水化合物和蛋白质。