Scientists may also breed more resistant varieties of crops.

科学家还可能培育出更具抗性的作物品种。

Breeding new varieties is the most immediate challenge for safeguarding our coffee supply.

培育新品种是保障我们咖啡供应的最直接挑战。

“Hen Fever” or “The Fancy”, with farmers all over Europe striving to breed new varieties with particular combinations of traits.

“Hen Fever”或“The Fancy”，欧洲各地的农民都在努力培育具有特定性状组合的新品种。

As humans moved around the world, so did the seeds and farmers continued to breed different varieties to adapt them to their new environments.

随着人类迁移到世界各地，种子和农民继续培育不同的品种，以适应他们的新环境。