collagen fibril

例句：

1. 1. Collagen is essential for the health of skin and hair.
   胶原蛋白对皮肤和头发的健康至关重要。
2. 2. The collagen fibers in the skin are responsible for its elasticity.
   皮肤中的胶原蛋白纤维负责其弹性。
3. 3. The research on collagen fibers has led to breakthroughs in medical treatments.
   关于胶原蛋白纤维的研究已经导致了医疗治疗的突破。