Probably Poland’s best-known vodka, Zubrovka (40% alcohol volume), is infused with bison grass.

Zubrovka也许是波兰最好的伏特加品牌（40%的酒精含量），它的酒瓶标志是一只水牛。

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When they started researching the supply chain, they learned that only 2-3% of all bison is actually grass-fed.

当他们开始研究供应链时，他们发现实际上只有2%到3%的野牛是食草的。

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The biggest obstacle is the ranchers themselves, whose cattle compete with prairie dogs and bison for grass and space.

最大的障碍是牧场主自己，他们的牛与土拨鼠和野牛争夺草地和空间。

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Now Zubrowka - bison grass vodka - and Zywiec beer are easy to find in British cities.

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