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English definition of “say when”

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say when

decide when to stop or end something: She started pouring the water and told me to "say when." Note: Used esp. when giving someone food or drink.
Translations of “say when”
in Chinese (Traditional) 斟夠了請說一聲…
in Chinese (Simplified) 斟够了请说一声…
(Definition of say when from the Cambridge Academic Content Dictionary © Cambridge University Press)
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