刀身

例句：

1. 1. The chef carefully sharpened the knife to ensure a perfect cut.
   厨师仔细磨利了刀，以确保切得完美。
2. 2. The chef used a new blade to replace the worn-out one on the knife.
   厨师用一把新的刀片替换了刀上的旧刀片。
3. 3. The chef tested the sharpness of the knife by cutting through a piece of bread.
   厨师通过切穿一片面包来测试刀的锋利程度。