Cut straight down, at a right Angle to board. with a quick stroke of the knife blade. pushing the potato slice away from the potato as you hit the board.

笔直往下切，让刀与刀板成直角后刀刃快速下压，切到底时用刀把刚切下来的土豆片推到一边。

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Whether you're aiming for layers of plywood or cardboard or a bale of hay, if that foot-long blade hits an Angle, it could come ricocheting back at you.

不管是几层胶合板、纸板还是一大捆干草，万一飞刀打在不平的表面上，它很可能会朝你自己反弹回来。

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The amount of blade twist is called the pitch angle .

叶片扭曲的量被称之螺旋上升角。

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