the purpose of improving the size and quality of

去改善他们农作物果树和葡萄
the their crops, their trees, their vines.

的种植规模和品质
They would not be willing to take the risk

他们在明确土地所有权之前
without clear title to the land.

是不愿意冒险的
That is the critical thing.

这是关键性所在
Once they have it, and they plant permanent crops,

一旦他们拥有了土地他们会栽种长期作物
that changes the whole basis of society and the values,

这就改变了整个社会的物质基础和价值观
and the attitudes that go with it.

以及处理这种问题时的态度
In short, according to Hanson,

简而言之据汉森所说
it is the invention of the family farm

这是一次家庭农业的变革
that is the critical moment in this,

这一重要的变革运动
very very important moment in the history of the human race and

是人类历史上一段极其重要的时期