diffuse villi

例句：

1. 1.The diffuse villi on the skin are responsible for absorbing nutrients from the environment.
   皮肤上的扩散绒毛负责吸收环境中的营养物质。
2. 2. The diffuse villi on the skin play a crucial role in maintaining the body's immune system.
   皮肤上的扩散绒毛在维护身体免疫系统方面起着至关重要的作用。
3. 3. During pregnancy, the diffuse villi on the uterine wall increase in size to facilitate the growth of the fetus.
   怀孕期间，子宫壁上的扩散绒毛增大以促进胎儿生长。