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English definition of “no good”

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no good

( also not any/much good)
not very useful or effective: It's no good trying to change his beliefs. I'm not much good at explaining math problems.
Translations of “no good”
in Chinese (Traditional) 道德敗壞的, 品行惡劣的…
in Chinese (Simplified) 道德败坏的, 品行恶劣的…
(Definition of no good from the Cambridge Academic Content Dictionary © Cambridge University Press)
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