counteract
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/ˌkaʊntərˈækt/
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/ˌkaʊntərˈækt/
to act against something to stop or reduce its bad effects
Eating healthy foods can help counteract the negative effects of junk food.
健康的な食品を食べることは、ジャンクフードの悪影響を打ち消すのに役立ちます。