农民在他们居住的土地上开垦。

Farmers cleared the land they lived on.

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从1966到1971年，他们开垦了大量土地，大大改善了他们的生活。

From 1966 to 1971, they reclaimed lots of lands and greatly improved their life.

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但是阿拉冈说：“我们需要改变人们利用和管理土地的方式，让他们在不用火的情况下开垦土地。”

But Dr Aragao said: "We need to change the way people use and manage their land so that they can do this without fire."

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