刀锋

例句：

1. 1. The chef carefully sharpened the knife to make it perfect for cutting.
   厨师小心翼翼地磨刀，使它成为切割完美的工具。
2. 2. The sharp knife sliced through the tough steak with ease.
   锋利的刀轻易地切穿了硬牛排。
3. 3. The knife's edge was razor-sharp, making it an essential tool in any kitchen.
   这把刀的边缘非常锋利，是厨房中必不可少的工具。