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Rule of thumb

Rule of thumb

(n)
UK
ruːl ɒv θʌm
US
rul ʌv θʌm
Definition: A broadly accurate guide or principle, based on practice rather than theory.
Meaning: Thông lệ chung, lời khuyên chung, quy tắc chung (dựa vào kinh nghiệm thực tế)
Not Common
How to use "Rule of thumb" vocabulary in sentence (example)

The phrase "rule of thumb" derives from the fact that brewers would use their thumb to determine if the liquid was at ideal temperature to add yeast.

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