#idiom اصطلاح 👉 means “something that shows the true worth or value of something or someone.” نهايت آزمايش براي اعتماد به شخصي، آزمون ، محک ، تست سنجش ارزش Usage in a movie ("Peter's Friends"): ⠀ - It can only be Roger and Mary! - I assume they must have resolved their differences last night. - This is the acid test. ⠀ 🏡 @English_House 🏡