prescutum

例句：

1. 1. The chef used a prescutum to make the perfect steak.
   厨师用一把预切刀切出了完美的牛排。
2. 2. She bought a prescutum for her kitchen tools.
   她买了一把厨房工具用的预切刀。
3. 3. The prescutum was so sharp that it could cut through even the toughest meat.
   这把预切刀非常锋利，连最硬的肉都能切穿。