Use blunt-edged hooks to keep children safe from sharp edges.

为了使儿童免受到割伤，最好使用钝边的挂钩。

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The knife blade angle is small, when cutting labor. The axe blade angle is larger. Used to cut bones and other objects, not easy to blunt. The two blade with a knife, a double-edged knife"."

现有菜刀的刀刃角度较小，切菜时省力。斧头的刀刃角度较大。用来砍骨头等物时，不容易钝。

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As Wilson tells the story, the Cardinal became so agitated one night, observing a dinner guest pick his teeth with the double-edged knife still in use, that he ordered blunt knives for his household.

NEWYORKER: A Fork of One��s Own