霧(きり) kiriが gaどんどん dondon濃(こ)く() kokuなっている natteiru。 The fog is getting thicker and thicker. Literal Fog [subject-が] steadily thick become-[progressive-ている]. どんどん is a mimetic adverb for rapid, progressive change — 'more and more, one after another.' Originally from the sound of drums. Here intensifies the rate of thickening. weather~くなる (become)~ている (ongoing state)どんどん (rapidly/steadily)
霧(きり) kiriが gaどんどん dondon濃(こ)く() kokuなっている natteiru。 The fog is getting thicker and thicker. Literal Fog [subject-が] steadily thick become-[progressive-ている]. どんどん is a mimetic adverb for rapid, progressive change — 'more and more, one after another.' Originally from the sound of drums. Here intensifies the rate of thickening. weather~くなる (become)~ている (ongoing state)どんどん (rapidly/steadily)