twenty Thành ngữ, tục ngữ

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twenty sack

one gram of marijuana, which costs $20

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Hindsight is twenty-twenty

After something has gone wrong, it is easy to look back and make criticisms.

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Twenty-four seven

Twenty-four seven or 24/7 means all the time, coming from 24 hours a day, 7 days a week.

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Twenty three skidoo

To be turned away.

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twenty

twenty
the twenties
the numbers or years, as of a century, from twenty through twenty-nine

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twenty-twenty hindsight

twenty-twenty hindsight
Knowledge after the fact, as in With twenty-twenty hindsight, I wouldn't have bought these tickets. This idiom uses twenty-twenty in the optometrist's sense, that is, “indicating normal vision,” and hindsight in the sense of “looking back” or “reconsidering.” [First half of 1900s]