Tim Joseph's grass-fed program is only one example of how American farming practice is changing.
蒂姆·约瑟夫的草饲计划只是美国农业实践正在发生变化的其中一个例子。
Did the shortage and high cost of labour change farming practice and push technology?
是劳动力的缺乏及其高成本改变了农业耕作方式并推动了技术革新吗？
Did the shortage and high cost of labour change farming practice and push technology?
是劳动力的缺乏及其高成本改变了农业耕作方式并推动了技术革新吗？
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