touchstone
US /ˈtʌtʃ.stoʊn/
UK /ˈtʌtʃ.stoʊn/
명사
1.
시금석
an established standard or principle by which something is judged:
예시:
•
Until relatively recently, the Japanese car industry was the touchstone of international success.
Lingoland에서 이 단어 학습하기