夜以继日 day and night
Explanation
形容人连续工作或学习，不知疲倦。
Describes someone who works or studies continuously without tiring.
Origin Story
西周时期，周武王去世后，年仅十三岁的周成王继位。他的叔叔周公旦辅佐他治理国家。为了巩固刚刚建立的西周政权，周公旦兢兢业业，夜以继日地处理政务，甚至废寝忘食。他平定了武庚等人的叛乱，使西周的统治更加稳固。周公旦的勤政爱民，为后世留下了一段佳话，也成为了夜以继日的典范。周公旦的故事流传至今，激励着一代又一代的人，为实现自己的目标而努力奋斗。在那个动荡的年代，周公旦的付出与贡献，让西周人民得到了安宁和发展。他以身作则，为臣子们树立了榜样。正是他夜以继日的付出，才使得西周在风雨飘摇中站稳了脚跟，发展壮大，为中华文明的延续做出了巨大的贡献。
During the Western Zhou Dynasty, after the death of King Wu of Zhou, the 13-year-old King Cheng of Zhou ascended the throne. His uncle, the Duke of Zhou, assisted him in governing the country. In order to consolidate the newly established Western Zhou Dynasty, the Duke of Zhou worked diligently day and night, even neglecting his sleep and meals. He quelled the rebellion of Wu Geng and others, making the rule of the Western Zhou Dynasty more stable. The Duke of Zhou's dedication and devotion to the people became a legend and set an example for tireless work. The story of the Duke of Zhou inspires generations to fight for their goals and work hard. During those turbulent times, his efforts and contributions brought peace and development to the people of Western Zhou. His actions set an example for civil servants. It was due to his tireless efforts that Western Zhou managed to establish itself amidst the political turmoil, flourish, and make a significant contribution to the continuation of Chinese civilization.
Usage
形容勤奋努力地工作或学习。
Describes working or studying diligently and hard.
Examples
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为了完成项目，他们夜以继日地工作。
wèi le wánchéng xiàngmù, tāmen yè yǐ jì rì de gōngzuò.
They worked day and night to complete the project.
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研究生为了毕业论文，夜以继日地查阅资料。
yánjiūshēng wèile bìyè lùn wén, yè yǐ jì rì de cháxué zīliào.
The graduate student worked day and night to consult information for his graduation thesis.
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科学家夜以继日地进行实验，终于取得了突破性的进展。
kēxuéjiā yè yǐ jì rì de jìnxíng shíyàn, zhōngyú qǔdé le tu pōxìng de jìnzǎn。
The scientist worked day and night to conduct experiments and finally made a breakthrough progress.