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English definition of “be a slam dunk”

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be a slam dunk

mainly US
to be a certain winner: Although he's a strong candidate, he's not a slam dunk.
Translations of “be a slam dunk”
in Chinese (Traditional) 成爲必勝者…
in Chinese (Simplified) 成为必胜者…
(Definition of be a slam dunk from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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