科研人员希望完善克隆牛技术，因为昂贵的高质牛肉市场庞大。
The researchers want to perfect cloning in cows because of the large market for expensive high-quality beef.
此次克隆牛是阿根廷研究所和阿根廷的国立圣马丁大学的共同努力结果。
The cloning was a joint effort between the Argentine institute and the country's National University of San Martin.
一直以来，克隆牛的成功率都很低，不过现在已经达到百分之三十左右。
"The success rate in the cloning of cattle was poor until recently, but now stands at about 30 percent," said Iritani.
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