peptone

例句：

1. 1.The chef added a pinch of peptone to the soup to thicken it.
   厨师在汤里加了一点肉汤来让它变浓。
2. 2. The meat was marinated in peptone before being cooked.
   肉在被烹饪前先在肉汤中腌制。
3. 3. Peptone is a protein source commonly used in cooking and baking.
   肉汤是一种常见的蛋白质来源，常用于烹饪和烘焙。