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。

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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。

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