a word to the wise
US /ə wɜrd tu ðə waɪz/
UK /ə wɜrd tu ðə waɪz/

1.
현명한 사람에게 한마디, 충고
a brief piece of advice or a warning, especially to someone who is likely to understand it without needing a lot of explanation
:
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Just a word to the wise, don't trust everything you hear.
현명한 사람에게 한마디 하자면, 듣는 모든 것을 믿지 마라.
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A word to the wise: always double-check your work before submitting it.
현명한 사람에게 한마디: 제출하기 전에 항상 작업을 다시 확인해라.