A sharp blade is likely to nick the skin and draw blood.

锋利的刀刃可能会划破皮肤，引起出血。

Incidents range from a nip, which fails to break the skin or draw blood, to serious injuries.

各种情况都有，从并未咬破皮肤或出血的轻伤到重伤。

I draw blood clawing at my neck.

我抓我的脖子，抓出血来。

Do you want me to draw blood?

你是想让我弄出血来吗？

If you milk a cow too much you draw blood, not milk.

牛奶挤得太多，最后挤出的是血，而不是奶。