Dr. Russel is creating an elite herd by cross-breeding goats from around the globe.
罗素博士正在通过使来自世界各地的山羊杂交而创造一种精品羊群。
Dr Russel is creating an elite herd by cross-breeding goats from around the globe.
拉塞尔博士正通过把全球各地的山羊品种进行杂交来培育一个优良种群。
Ultimate measure of dairy herd improve and establish elite cow herd is dairy breeding work.
奶牛育种工作，是改善牛群质量、建立良种奶牛群根本措施。
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