日旰忘餐
    Pinyin: rì gàn wàng cān

    Usage: 偏正式；作谓语；含褒义

    Explanation: 形容工作勤劳，忘了时间，忘了吃饭。

    Source: 南朝·宋·范晔《后汉书·儒林传上·尹敏》：“与班彪亲善，每相遇，辄日旰忘食，夜分不寝。”

  • Thesaurus:  On sunset too busy or concentrated as to forget mealtime