collastin

例句：

1. 1.Collagen is essential for the structure and strength of connective tissues.
   胶原蛋白对于结缔组织的结构强度至关重要。
2. 2. The skin's elasticity is largely due to the presence of collagen.
   皮肤的弹性在很大程度上归功于胶原蛋白的存在。
3. 3. As we age, our bodies produce less collagen, leading to wrinkles and other signs of aging.
   随着年龄的增长，我们的身体产生的胶原蛋白减少，导致皱纹和其他衰老迹象的出现。