bone matrix gelatin

例句：

1. 1. Collagen is a major component of skinand connective tissues.
   胶原蛋白是皮肤和结缔组织的主要组成部分。
2. 2. Thecollagen fibers in theskin are responsible for its strengthand elasticity.
   皮肤中的胶原蛋白纤维负责其强度和弹性。
3. 3. Collagen supplements can helpimprove joint health and reduce inflammation.
   胶原蛋白补充剂可以帮助改善关节健康并减少炎症。