acid test

ریشه

Originates from the 19th-century practice of testing gold with nitric acid.

مثال

• The acid test for the product will be its performance in long-term use.
• The election will be the first real acid test of the new government.
• The acid test of any scientific theory is whether it makes correct predictions.

ترکیب‌های رایج

Pass the acid test Fail the acid test The acid test of The acid test for