protensyl

例句：

1. 1. Proteins are essential for the growth and repair of cells.
   蛋白质对于细胞的生长和修复至关重要。
2. 2.The body needs protein to build and repair tissues.
   身体需要蛋白质来构建和修复组织。
3. 3. Protein is a macronutrient that provides energy and helps with muscle growth.
   蛋白质是一种宏量营养素，提供能量并有助于肌肉生长。