excretion vesicles

例句：

1. 1. The cells in the kidneys are responsible for filtering out waste products and producing urine.
   肾脏中的细胞负责过滤废物和产生尿液。
2. 2.The excretion vesicles of the skin cells contain enzymes that break down dead skin cells.
   皮肤细胞的排泄囊含有酶，这些酶分解死亡的皮肤细胞。
3. 3. During digestion, food is broken down into smaller molecules by enzymes in the digestive tract.
   在消化过程中，食物通过消化道中的酶被分解成更小的分子。