counteract
verb [ T ] uk/ˌkaʊn.tərˈækt/ us/ˌkaʊn.t̬ɚˈækt/
抵消；对抗；减少
to reduce or remove the effect of something unwanted by producing an opposite effect
Drinking a lot of water counteracts the dehydrating effects of hot weather. 大量饮水可缓解炎热天气引起的脱水。