1. 名詞
   試金石
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   檢驗標準
   /此名詞複數為"touchstones"/
   

   同義字詞
   bar,barometer,benchmark,criterion,grade,mark,measure,par,standard,yardstick
   

例句

1. Touchstone (reprint), 1985.
2. New York: Touchstone Press, 2005.
3. And that's been the touchstone .
4. As a sole touchstone it is useless.
5. Simon and Schuster Touchstone Books.
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