"one by one" meaning in All languages combined

{
  "etymology_text": ": one by one < → δείτε τις λέξεις one, by και one",
  "forms": [
    {
      "form": "one by one"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Ιδιωματισμοί (αγγλικά)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "They went it one by one.",
          "translation": "Μπήκαν μέσα ένας-ένας."
        }
      ],
      "glosses": [
        "ένας-ένας, χωριστά και με σειρά"
      ],
      "id": "el-one_by_one-en-phrase-CtQW-XEG",
      "raw_tags": [
        "ιδιωματισμός"
      ]
    }
  ],
  "word": "one by one"
}

{
  "etymology_text": ": one by one < → δείτε τις λέξεις one, by και one",
  "forms": [
    {
      "form": "one by one"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Ιδιωματισμοί (αγγλικά)"
      ],
      "examples": [
        {
          "text": "They went it one by one.",
          "translation": "Μπήκαν μέσα ένας-ένας."
        }
      ],
      "glosses": [
        "ένας-ένας, χωριστά και με σειρά"
      ],
      "raw_tags": [
        "ιδιωματισμός"
      ]
    }
  ],
  "word": "one by one"
}