技术和将来的经济刺激可以扩大商品作物的面积。

Technology and future economic incentives could make additional acres capable of producing commercial crops.

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在大多数美国农场，有一两种主要农产品是商品作物。

On most American farms, one or two principal products are raised for a cash crop.

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最新的研究表明，远离农场的蜜蜂，其健康状况和食物数量都比商品作物附近的蜜蜂要好得多。

Recent studies show that bees off the farm have a healthier and more varied diet than those making the commercial-crop rounds.

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