amino-acid reagent

例句：

1. 1. The amino-acid reagent is used to test the protein content of food samples.
   氨基酸试剂用于检测食品样品中的蛋白质含量。
2. 2.The amino-acid reagent was developed to help scientists analyze the structure of proteins.
   氨基酸试剂被开发出来，帮助科学家分析蛋白质的结构。
3. 3. The amino-acid reagent is widely used in biochemistry and molecular biology research.
   氨基酸试剂在生物化学和分子生物学研究中广泛使用。