And with a little pen-knife held in her hand.

而一把小刀藏在她手里。

Students today depend too much upon ink. They don't know how to use a pen knife to sharpen a pencil.

现在的学生过分依赖墨水，连用小刀削铅笔都不会。

If you cut this seed-vessel across with a pen-knife, you will find inside it some tiny young green seeds.

用一把小刀将这个种皮切开，就能看到里面尚未成熟的绿色小种。