stem of villus

例句：

1. 1. The baby's villus are soft and fluffy.
   婴儿的绒毛柔软而蓬松。
2. 2. The scientist examined the villus of the plant carefully.
   科学家仔细检查了植物的绒毛。
3. 3. The villus on the cat's fur is thick and soft.
   猫毛上的绒毛又厚又软。