据阿尔珀特，“一个有用的答案是，一个产品是一个独特技术的应用为特定客户良好的某一特定功能的规定。”
According to Alpert, "One useful answer is that a product is the application of a distinct technology to the provision of a particular function for a specific customer good."
纽约心理医生乔纳森·阿尔珀特注意到，更多的夫妇“由于经济上的忧虑”而生活在一起，“而通常他们本应出现在离婚法庭上。”
Jonathan Alpert, a New York-based psychotherapist, has seen many more couples living together "due to financial worries, who ordinarily would have been in a divorce court."
罗得岛州普罗维登斯市布朗大学阿尔珀特医学院内分泌科、哈来特糖尿病及内分泌中心（R.J.S。），02903；
Division of Endocrinology and the Hallett Center for Diabetes and Endocrinology (R. J. S. ), Alpert Medical School of Brown University, Providence, Rhode Island 02903;
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