The main knife-edge area is a convex strip-shaped cutting belt, and is used to cut into sheets and threads;

主刀口区是呈凸弧狭条形切割带，用于切片切丝；

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A first time user might come to the site and just the main knife is flipped open. It's immediately clear what the main benefit and purpose of this thing is: it's a knife.

第一次进入网站的用户看到的网站，就应像翻开刀部分的瑞士军刀，它的主要作用毫无疑问只是一把刀子。

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Lord Drummond Young, who heard the appeal with Lady Smith, said Henderson was "the main attacker" who had used a knife.

BBC: David Jones

But the main constraint is the lack of enough people trained to wield the knife cleanly and safely.

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The main effect of the decision is to restrict what had become a sort of Swiss Army knife for prosecutors.

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