acid rain
US /ˈæs.ɪd ˌreɪn/
UK /ˈæs.ɪd ˌreɪn/
1.
pluie acide
rain that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH). It is caused by emissions of sulfur dioxide and nitrogen oxide which react with water molecules in the atmosphere to produce acids.
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The factory's emissions are contributing to acid rain in the region.
Les émissions de l'usine contribuent aux pluies acides dans la région.
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Acid rain can damage forests and aquatic ecosystems.
Les pluies acides peuvent endommager les forêts et les écosystèmes aquatiques.