20/20
Học thuậtThân thiện
Definition
Noun: 1. Normal visual acuity: The standard measurement for normal clarity or sharpness of vision when viewing an object from a distance of 20 feet. A person with 20/20 vision can see at 20 feet what a person with normal vision should be able to see at that distance. 2. Perfect hindsight: Used figuratively to describe the perfect understanding of a situation or event after it has happened, implying that the correct course of action is obvious only in retrospect.
Usage Examples
- Noun (Visual Acuity):
- The optometrist confirmed that I still have 20/20 vision.
- Not everyone is born with 20/20; some people require glasses to achieve it.
- Noun (Figurative: Hindsight):
- It's easy to say we should have sold the stock then, but that's 20/20 hindsight.
- With 20/20 hindsight, I realize my mistake.
Advanced Usage
- "20/20 vision": The full and most common phrase for the medical term.
- Her 20/20 vision made her an excellent candidate for the pilot program.
- "Hindsight is 20/20": A common idiom stating that understanding past events is clear and obvious only after they have occurred.
- Of course the solution seems simple now—hindsight is 20/20.
Variants and Related Words
- 20/20 hindsight (noun phrase): The clear understanding of an event only after it has happened.
- Visual acuity (noun): The technical term for the clarity of vision, which 20/20 measures.
- Hindsight (noun): Understanding of a situation or event only after it has happened.
Synonyms
- Perfect vision (for the visual meaning).
- Retrospective clarity (for the figurative meaning).
Related Idioms
- Hindsight is 20/20: The standard idiom encapsulating the figurative meaning.
- I know you regret not taking the job, but remember, hindsight is 20/20.
Noun
- normal visual acuity, as measured by the ability to read charts at a distance of 20 feet