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English definition of “a shot in the arm”

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a shot in the arm

something that has a sudden and positive effect on something, providing encouragement and new activity: Fresh investment would provide the shot in the arm that this industry so badly needs.
Translations of “a shot in the arm”
in Chinese (Traditional) 刺激因素,興奮劑…
in Chinese (Simplified) 刺激因素,兴奋剂…
(Definition of a shot in the arm from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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