Statistical analysis shows that the economical importances of lactation, beef and secondary traits in this population are in the proportion of 2 : 1 : 2.

经统计分析表明，北京奶牛群的乳用、肉用和次级性状经济重要性之比为2：1：2。

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That's why the government has just announced plans to beef up the primary curriculum and why it's hoping to do the same in secondary education.

BBC: Elizabeth Truss MP calls for maths teaching revamp