Don't play with scissors or pen knives.

不要玩剪刀或美工刀。

youdao

Typically, you'll find a "pen" blade on pocket knives.

通常，你会发现笔形刀刃出现在口袋刀上。

youdao

There is a pen, two knives and several books on the table.

桌子上有一支钢笔、两把小刀和几本书。

youdao

The policy is aimed at allowing passengers to carry pen knives, corkscrews with small blades and other knives.

NPR: TSA To Allow Small Knives, Bats, Clubs On Planes

The policy is aimed at allowing passengers to carry pen knives, corkscrews with small blades and other small knives.

NPR: TSA Stands By Plan To Allow Small Knives On Planes

Some experts say security improvements since the attacks -- most notably reinforced cockpit doors, better intelligence and motivated passengers -- have made the strict prohibition of small pen-knives unnecessary.

CNN: March 7, 2013 -- Updated 0312 GMT (1112 HKT)