zwalczyć in inglese:

You have to stay in bed and take some medicines to fight off the flu.

Our ancestors developed massive jaws as a result of constant combat.

There's nothing like close combat to test one's mettle.

Their leader is trying to combat climate change.

Tom died in combat.

If we want to combat a threat, we need to know where the threat comes from.

combat the stiffness

In real combat, you must not forget that hesitation is a very dangerous thing.

Combat soldiers during peaceful moments like to reminisce of their halcyon days.

His combat against terrorism was successful.

combat crime/inflation/disease

He would work closely with US allies in the Middle East to combat extremism

a ​fight, ​especially during a ​war: Many people died in this combat.

And apparently, some companies in the UK are offering their employees activities such as... Hunger Games-style combat days where teams must work together to 'kill' as many of the opposing team as possible.

It was a mortal combat as we killed all of our enemies. The police combats crime.

Stop maize monoculture, and reestablish multiple cropping, to combat the loss of landscape and soil diversity.