Three-knife trimmer: A guillotine designed with three knives for trimming sizeable stacks of books or magazines.

三刀切书机：设计用来裁切适量书本或杂志边缘的切纸机。

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With three multi-purpose knives, you can perform almost every cutting job; while other types have more specialized uses.

选择3种最常用的刀，他们几乎可以帮助你完成所有的切菜工作。 当然除此之外，还有另外一些专用刀具。

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As for that Xie Guozhong who came up with "three-knives" theory, I truly doubt if he really had studied abroad.

而那个“三把刀”的谢国忠，我真怀疑他是不是真在外国学习过。

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According to police reports, two people armed with knives attacked three churches.

BBC: NEWS | Middle East | Knife attacks on Egypt churches

The prosecution told the court the men had scouted her home and were on their way to attack her armed with the sword, three knives, two hammers, masks, gloves, hosepipe and a makeshift body bag, when they were arrested in Cullompton, Devon.

BBC: Joss Stone accused 'like a goldfish in a bowl'

According to the Wilson Center, Dr. Esfandiari was on her way to the airport on December 30th when three masked men with knives threatened to kill her and took her baggage and passports - both U.S. and Iranian.

NPR: Iran Detains Iranian-American Scholar