touchstone
noun [ C ] uk/ˈtʌtʃ.stəʊn/ us/ˈtʌtʃ.stoʊn/
检验标准，试金石
an established standard or principle by which something is judged
Until relatively recently, the Japanese car industry was the touchstone of international success. 直到近几年，日本的汽车工业一直都是衡量是否在国际上取得成功的业界标杆。
Compare: criterionmeasure nounstandard nounyardstick (STANDARD)