When it's like this

刀───knife;这样───such

The knife did not pierce very deeply.───刀扎得不很深.

The thief wounded her in the arm with his knife.───小偷用刀子扎伤了她的手臂.

The knife wound penetrated to the bone.───刀伤深至骨头.

I pulled a knife and threatened her.───我拔出刀威胁她。

The boy traded his knife for a cricket bat.───那男孩用他的刀子换了一个板球棒.

He ground the knife sharp.───他把刀磨锋利.

He tapered the stick with a knife.───他用小刀把棍子的一端削尖.

This knife needs sharpening.───这把刀需要磨了。