the acid test
最嚴(yán)苛的考驗(yàn)或檢驗(yàn)
正式或口語·表達(dá)關(guān)鍵考驗(yàn)
英文釋義
a definitive test or assessment to determine the true quality or value of something
例句
The final exam was the acid test of our knowledge this semester.
典故來源
源自化學(xué)中用酸測試黃金真?zhèn)蔚姆椒ǎ蟊扔髯顕?yán)格的檢驗(yàn)。