一流的步行者可以寻找更多的食物和水或最好的石头做工具。

First-rate walkers could travel to find food, water or the best stone for tools.

youdao

亚马逊当地人经常用食人鱼的牙齿来做工具和武器。

Locals in the Amazon region often use piranha teeth to make tools and weapons.

youdao

从发现如何打碎石头制做工具切割肉类开始，人类即学着投机取巧。

Discovering how to chip stones to make a tool that would cut flesh was the moment man learned to be an opportunist.

youdao

I want to make it a little more explicit, and I want to show you a tool for doing that.

我想讲的清楚一点，并且我，还会给大家介绍一个做这个的工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

For at least four decades, people have been building tools called debuggers.

在过去的至少四十年里,人们一直在做一种叫做调试器的工具。

麻省理工公开课 - 计算机科学及编程导论课程节选

We'll use more sophisticated tools before long, but let's do a little sanity check.

我们不久后将用更多的复杂的工具，但是让我们做一个明智的检查。

哈佛公开课 - 计算机科学课程节选