protelid

例句：

1. 1. Proteases are enzymes that break down proteins.
   蛋白酶是一类能够分解蛋白质的酶。
2. 2.The protease in the digestive system plays a crucial role in breaking down food.
   消化系统中的蛋白酶在分解食物中起着至关重要的作用。
3. 3. The discovery of protease inhibitors has led to new treatments for cancer patients.
   发现蛋白酶抑制剂为癌症患者带来了新的治疗手段。