巴西东北部和墨西哥等集约化养殖地区的最佳生长期可能会降至120天以下，这对玉米等作物的成熟至关重要。

Intensively farmed areas like northeast Brazil and Mexico are likely to see their prime growing seasons fall below 120 days, which is critical for crops such as corn to mature.

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大规模的洪水、长期的干旱、飓风和严重的季风每年都会造成损失，摧毁数百万吨有价值的农作物。

Massive floods, long droughts, hurricanes and severe monsoons take their toll each year, destroying millions of tons of valuable crops.

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例如始于1560年的100年冷期，造成了农作物生长期的短缩。

For instance, a 100-year cold period beginning in 1560 caused shortened crop-growing seasons.

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Once they have it, and they plant permanent crops, that changes the whole basis of society and the values, and the attitudes that go with it.

一旦他们拥有了土地,他们会栽种长期作物,这就改变了整个社会的物质基础和价值观,以及处理这种问题时的态度

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