"burn the midnight oil" meaning in 英語

{
  "categories": [
    {
      "kind": "other",
      "name": "英語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 成句",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語 成句_動詞句",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "ref": "He was burning the midnight oil to finish his paper.\n（この例文の訳文をお願いします。）",
          "text": "彼は徹夜して論文を仕上げた。"
        }
      ],
      "glosses": [
        "徹夜して仕事や勉強をする。"
      ],
      "id": "ja-burn_the_midnight_oil-en-phrase-JlNCcHnE"
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "burn the midnight oil"
}

{
  "categories": [
    "英語",
    "英語 terms with redundant head parameter",
    "英語 成句",
    "英語 成句_動詞句"
  ],
  "lang": "英語",
  "lang_code": "en",
  "pos": "phrase",
  "pos_title": "成句",
  "senses": [
    {
      "examples": [
        {
          "ref": "He was burning the midnight oil to finish his paper.\n（この例文の訳文をお願いします。）",
          "text": "彼は徹夜して論文を仕上げた。"
        }
      ],
      "glosses": [
        "徹夜して仕事や勉強をする。"
      ]
    }
  ],
  "tags": [
    "idiomatic"
  ],
  "word": "burn the midnight oil"
}