does there exist a countably infinite normed field which is complete?

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We know $Q$ with any of $p$ aidic norms is not complete for all primes including infinity. Now my question is can we make same conclusion for any countably infinite fields ? i.e does there exist a countably infinite normed linear field which is complete ?

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Such a field is a topological group, hence homogeneous. This answer shows such a space must be discrete. Can you show normed fields cannot be discrete?