1. Peptides are short chains of amino acids that play important roles in the body's biological processes. - 肽是在人体生物过程中发挥重要作用的氨基酸短链。

2. Some skincare products contain peptides to help improve the elasticity and firmness of the skin. - 一些护肤产品含有肽，有助于改善皮肤的弹性和紧实度。

3. Research has shown that certain peptides can help stimulate collagen production in the skin. - 研究表明，某些肽可以帮助刺激皮肤中的胶原蛋白产生。

4. Peptides are often used in the field of medicine for their potential therapeutic benefits. - 肽常被用于医学领域，因为它们具有潜在的治疗益处。

5. Athletes sometimes use peptide supplements to aid in muscle recovery and growth. - 运动员有时会使用肽补充剂来帮助肌肉恢复和生长。

6. The study of peptides and their effects on the body is a growing area of research in the field of biochemistry. - 对肽及其在人体上的影响的研究是生物化学领域研究的一个不断发展的领域。