你必须学会怎样利用工具使你生命中的主动性发挥到最大。
You must learn to use tools to maximize proactivity in your life.
发现如何把石头凿成可以割肉的工具的时候，就是人类学会如何利用工具的时候。
Discovering how to chip stones to make a tool that would cut flesh was the moment man learned how to be an opportunist.
我认为学会制作利用工具在野外生存这些东西很有用。
I think it's useful surviving in the wild, making some tools to survive.
我认为学会制作利用工具在野外生存这些东西很有用。
I think it's useful surviving in the wild, making some tools to survive.
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