日期：
来源：雅诚德英语网
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。
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。