pocket knife

基本解释

If I take a pencil and I take my pocket knife... So here is a pencil.
拿一支铅笔，这是我的小折刀。,这是铅笔。
And I take my pocket knife and I put the knife, I jam my knife in here. So this is the knife.
我拿起小折刀，把它抵在这里，把刀抵在这里，这就是那刀。
But Polce says she can't understand why the officers found it necessary to kill her son, who she describes as 5'3" tall, 118 pounds and armed with only a folding pocket knife.
但是Polce说，她不能理解为什么警方人员一定要杀死她儿子——这个只有5英尺3英寸高，118磅重，手里仅持一把可折叠小刀的男孩儿。

Murrah building to amputate a woman's leg with a pocket knife, was a persuasive witness.
FORBES: Magazine Article
Remember, the only American merchant ship ever almost taken by pirates defeated the pirates with a pocket knife.
FORBES: How Is The Shipping Industry "Pirate Proofing" Their Fleets?
The bartender had a pocket knife on the counter.
NEWYORKER: Hellhole

A pocket knife is a small knife with several blades that fold into the handle so that you can carry it around with you safely.