our ancestors could well have been successful in using very basic weapons to hunt down their meat.我们的祖先仅凭极其基本的武器即可成功捕捉到他们所需的肉

hunt down追捕…直至捕获；搜寻…直至发现

I hunted down the woman who stole my baby.

我追踪到了这个偷了我孩子的女人。

Professor Jones hunted down the written manuscript in the library of Congress.

琼斯教授在国会图书馆找到了手稿。

You have to be tough and clever to be able to live like this,只有身手矫健警觉机灵 ，才有可能吃到肉

be able to会； 能

A good lawyer might be able to get you off.

请位好律师有可能使你免受追究。

You'll be able to come, won't you?

你能来的，对吗?