This experiment was conducted to investigate the quality of Holstein bull which are introduced by Western Inner Mongolia improved cow breeding center,and detected the straw semen quality.
本试验对内蒙古西部良种奶牛繁育中心引进的荷斯坦种公牛进行品质评定,并对中心生产的细管型冷冻精液各项指标进行检测。
参考来源 - 不同组分精液稀释液对牛精子冷冻保护效果的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
试验结果表明：内蒙古西部良种奶牛繁育中心引进的12头荷斯坦种公牛符合种用公牛的繁殖性能的要求，表明可以进行正常的配种和种用。
The results showed that: the 12 Holstein Bulls that were introduced by Western Inner Mongolia improved cow breeding center can fit for the requirement of reproductive, and can be used for breeding.
一种水生植物的果实，看起来像一只长着骇人犄角的黑公牛的头部。
The fruit of an aquatic plant, they look like a black bull's head with impressive horns.
那头公牛安静下来，站着不动了，使劲地看着威廉·杜伊，看着他把曲子拉了又拉；看到后来，公牛的脸上都悄悄露出一种笑容来了。
The bull softened down, and stood still, looking hard at William Dewy, who fiddled on and on; till a sort of a smile stole over the bull's face.
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