- cut-off edge
- 切: correspond to; be close to
- 刀刃: knife blade
- 外切刀刃: outside blade
- 主切刀刃: prinipal cutting edge
- 刀刃: 1.(刀口) the edge of a knife; cutter edge; knife edge; tool edge; bit; blade point; blade2.(最能發揮作用的地方) where a thing can be put to best use; the crucial point 好鋼用在刀刃上 use the best steel to make the knife's edge; use resources where they are needed most
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