They threw back; a sharp stone cut his cheek.

他们也扔石头打他，一块尖石头砸伤了他的脸。

However, any truly sharp stone is a bit of a slot machine, right?

然而，任何真正锋利的石头都有点像老虎机，对吗？

You're clutching a light spear with a sharp, pointed stone at the end of it.

你握紧手中轻盈的长矛，尖端上石制的矛尖锋芒毕露。

It comes from the Latin word, 'scrupulum', which means a sharp stone.

它来自拉丁词“scrupulum” ， 意思是锋利的石头。

Then I cut myself — a small cut on the leg, with a sharp stone.

然后我割伤了自己——腿上有一个小伤口， 是用锋利的石头割伤的。

It was very dark, and on the rough road at that speed, my foot was soon cut and bleeding from the sharp stones.

天色很黑了，在那样高低不平的路上，那样快地奔跑，我的脚很快就被锋利的石头划伤了，而且流出血来。

But, they believe that a sharp stone tool may have made the cut, and some of the plant life in the area could have been used for medical treatment.

但是，他们认为可能是一种锋利的石器完成了截肢的操作，而且该地区的一些植物可能被用来治病。

Speaking of which, the ancient hominins who made these tools would have had to ask each other for tips on how to make the strongest glue and the sharpest stones.

说到这一点，制造这些工具的古人类就不得不互相请教，如何制造最坚固的胶水和最锋利的石头。

Sharp stones served them for knives and hatchets to cut with; fish bones, and the hard sinews of certain animals, served them with needles to sew with; and these seem to have been their principal instruments of trade.

锋利的石头为他们提供了用来切割的刀和斧头；鱼骨和某些动物的硬筋，用来缝针；这些似乎是他们的主要贸易工具。

However, they have excellent medicines, composed of herbs, to cure accidental bruises and cuts in the pastern or frog of the foot, by sharp stones, as well as other maims and hurts in the several parts of the body.

然而，他们有很好的药物，由草药组成，可以治疗因尖锐的石头意外擦伤和脚掌或青蛙的割伤，以及身体其他几个部位的残废和伤害。