B: building an area of 60 acres, will have cow herds reached 600, the farmers may bring more than 500 households.

二期：建筑面积60亩，建成后奶牛存栏量达600头，可带动农户500余户。

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Some grain analysts say U.S. farmers need to plant an additional eight million acres this year to bring supplies back to more comfortable levels, but it is far from clear where so much land would come from.

WSJ: Grain Prices Soar as U.S. Slashes Outlook