rolling herd average 牛群年度平均产奶量
Only 94 of Britain's roughly 13,500 dairy farms currently raise more than 500 cows, according to the National Farmers' Union (NFU); the average dairy herd Numbers 114.
英国全国农场主联合会(nfu)表明，英国如今有大约13,500个奶牛场，其中仅有94家养的奶牛超过500头；每家奶牛场平均有114头奶牛。
Only 94 of Britain's roughly 13, 500 dairy farms currently raise more than 500 cows, according to the National Farmers' Union (NFU); the average dairy herd Numbers 114.
英国全国农场主联合会(nfu)表明，英国如今有大约13,500个奶牛场，其中仅有94家养的奶牛超过500头；每家奶牛场平均有114头奶牛。
A wise herd will learn to tolerate the eccentricity of those who rise above the average, and to treat with a minimum of ferocity those who fall below it.
聪明的群体会学会宽容这些高于平均道德者的反常行为，而对那些低于平均道德的人，也不会过于残暴。
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