This is the 5588th most frequent Chinese word.
刀刃
Blade or edge of a knife.
In this sentence, '刀刃' refers to the sharp edge of a knife that is used for cutting things.
利用刀刃切开水果。
Using the blade to cut open the fruit.
Here, '刀刃' symbolizes a critical or risky situation, emphasizing a metaphorical sharp edge.
这次比赛让他感到自己处于刀刃之上。
This competition made him feel like he was on the edge of a blade.
'刀刃' in this context represents the literal physical component of cutting tools which require maintenance to stay effective.