Regenerative products could be a hard sell, because the concept is tough to define quickly, says Julie Stanton, associate professor of agricultural economics at Pennsylvania State University Brandywine.
宾夕法尼亚州立大学布兰迪葡萄酒分校的农业经济学副教授朱莉·斯坦顿表示，再生产品可能难以推销，因为这一概念很难迅速明确定义。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。