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单词 acid test
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈac•id ˈtest, n. [countable]
  1. a difficult test that proves whether something is true, good, etc:The ability to convince a reader is the acid test of writing skill.

WordReference Random House Unabridged Dictionary of American English © 2024
acid test, 
  1. a severe and conclusive test to establish quality, genuineness, worth, etc.
  • 1890–95

Collins Concise English Dictionary © HarperCollins Publishers::
acid test n
  1. a rigorous and conclusive test to establish worth or value
Etymology: 19th Century: from the testing of gold with nitric acid
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