"llover sobre mojado" meaning in Spanish

{
  "forms": [
    {
      "form": "llueve sobre mojado",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "llovió sobre mojado",
      "tags": [
        "preterite",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "llovido sobre mojado",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "llover<ue.only3s> sobre mojado"
      },
      "expansion": "llover sobre mojado (impersonal, third-person singular present llueve sobre mojado, third-person singular preterite llovió sobre mojado, past participle llovido sobre mojado)",
      "name": "es-verb"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Rain",
          "orig": "es:Rain",
          "parents": [
            "Water",
            "Weather",
            "Liquids",
            "Atmosphere",
            "Matter",
            "Nature",
            "Chemistry",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "Nobody dares to make a prediction, but will venture to guess that it will be a crisis that won't just last a few months. The problem is that when it rains, it pours.",
          "ref": "2021 March 6, Cristian Segura, María Sosa Troya, “La natalidad se desploma en España por el confinamiento”, in El País",
          "text": "Nadie se atreve a pronosticarlo, pero sí a aventurar que no será una crisis de unos meses. El problema es que llueve sobre mojado.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "to be one thing after another"
      ],
      "id": "en-llover_sobre_mojado-es-verb-E1Zme4c8",
      "links": [
        [
          "one thing after another",
          "one thing after another"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, impersonal) to be one thing after another"
      ],
      "tags": [
        "idiomatic",
        "impersonal"
      ]
    }
  ],
  "word": "llover sobre mojado"
}

{
  "forms": [
    {
      "form": "llueve sobre mojado",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "llovió sobre mojado",
      "tags": [
        "preterite",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "llovido sobre mojado",
      "tags": [
        "participle",
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "llover<ue.only3s> sobre mojado"
      },
      "expansion": "llover sobre mojado (impersonal, third-person singular present llueve sobre mojado, third-person singular preterite llovió sobre mojado, past participle llovido sobre mojado)",
      "name": "es-verb"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Spanish entries with incorrect language header",
        "Spanish idioms",
        "Spanish impersonal verbs",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish terms with quotations",
        "Spanish verbs",
        "es:Rain"
      ],
      "examples": [
        {
          "english": "Nobody dares to make a prediction, but will venture to guess that it will be a crisis that won't just last a few months. The problem is that when it rains, it pours.",
          "ref": "2021 March 6, Cristian Segura, María Sosa Troya, “La natalidad se desploma en España por el confinamiento”, in El País",
          "text": "Nadie se atreve a pronosticarlo, pero sí a aventurar que no será una crisis de unos meses. El problema es que llueve sobre mojado.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "to be one thing after another"
      ],
      "links": [
        [
          "one thing after another",
          "one thing after another"
        ]
      ],
      "raw_glosses": [
        "(idiomatic, impersonal) to be one thing after another"
      ],
      "tags": [
        "idiomatic",
        "impersonal"
      ]
    }
  ],
  "word": "llover sobre mojado"
}