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English definition of “intervene”

intervene

verb [I]  /ˌɪn·tərˈvin/ us  

intervene verb [I] (GET INVOLVED)

to become involved intentionally in a difficult situation in order to change it or improve it, or prevent it from getting worse: The superpowers began to intervene in local struggles in Africa.

intervene verb [I] (COME BETWEEN)

to happen between two events, or to prevent something from happening by happening first: Two decades intervened between the completion of the design and the opening of the theater.
(Definition of intervene from the Cambridge Academic Content Dictionary © Cambridge University Press)
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