collagen microfibrils

例句：

1. 1.Collagen is a protein that gives skin its strength and elasticity.
   胶原蛋白是赋予皮肤强度和弹性的蛋白质。
2. 2. Collagen plays a crucial role in wound healing.
   胶原蛋白在伤口愈合中起着关键作用。
3. 3.The collagen in your skin can be damaged by UV radiation, leading to wrinkles.
   你的皮肤中的胶原蛋白可以被紫外线辐射损坏，导致皱纹。