1. Collagen is the main structural protein found in the connective tissues of animals and is responsible for their strength and elasticity.
胶原蛋白是在动物的结缔组织中发现的主要结构蛋白质，对其强度和弹性负责。
2. The production of collagen can be stimulated by certain vitamins and minerals, such as vitamin C and zinc.
某些维生素和矿物质，如维生素C和锌，可以刺激胶原蛋白的产生。