ectal layer

例句：

1. 1.The study found that the ectal layer is responsible for absorbing water and nutrients from the intestine.
   研究发现，肠壁层负责吸收肠道中的水分和养分。
2. 2. The ectal layer is also involved in the absorption of fats and cholesterol.
   肠壁层还参与脂肪和胆固醇的吸收。
3. 3. The ectal layer plays a crucial role in maintaining the health of the digestive system.
   肠壁层在维护消化系统健康中起着至关重要的作用。