长年累月 years and months
Explanation
形容经过了很多年月。
Describes a period of many years and months.
Origin Story
从前，在一个偏僻的小山村里，住着一位名叫阿牛的年轻木匠。他为人善良勤恳，手艺精湛。村里人盖房子，都喜欢请他帮忙。阿牛承蒙乡亲厚爱，日复一日，年复一年，辛勤地工作着。他总是天不亮就起床，晚上很晚才睡，长年累月地用自己的双手建造了一个又一个温暖的房屋，为村民们提供了遮风避雨的住所。他虽然没有多少文化，但他有一颗真诚善良的心，用自己的双手默默地奉献着。村里人非常敬佩他，称赞他是一个好木匠，好邻居。阿牛用自己的双手，用长年累月的不懈努力，为小山村的建设做出了巨大贡献，也为自己的生活创造了幸福美满的条件。若干年后，小山村发生了翻天覆地的变化，一栋栋漂亮的砖瓦房取代了以前的土坯房，而这一切都离不开阿牛长年累月的辛勤付出。他那朴实无华的人生，如同大山一样沉稳，如同老树一样坚韧，为后人留下了宝贵的精神财富。
Once upon a time, in a remote mountain village, lived a young carpenter named Aniu. He was a kind and hardworking man with exquisite craftsmanship. Villagers loved to ask for his help when building houses. Aniu was loved by his neighbors, and day after day, year after year, he worked diligently. He always got up before dawn and went to bed late at night. He spent years building one warm house after another with his own hands, providing villagers with shelter from wind and rain. Although he didn't have much education, he had a sincere and kind heart, silently dedicating himself with his own hands. The villagers respected him very much and praised him as a good carpenter and a good neighbor. Aniu, with his own hands and tireless efforts over many years, made great contributions to the construction of the mountain village and created a happy and fulfilling life for himself. After many years, the mountain village had undergone earth-shaking changes, and beautiful brick houses replaced the old adobe houses. All of this was due to Aniu’s tireless efforts for many years. His simple and unadorned life, like a mountain, was stable and persistent, like an old tree, and left precious spiritual wealth for future generations.
Usage
用于形容时间很长，多用于书面语。
Used to describe a long period of time, mostly in written language.
Examples
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他长年累月地工作，终于完成了这个伟大的工程。
ta changnianleuyuede gongzuo, zhongyu wanchengle zhege weida de gongcheng.
He worked for years and finally completed this great project.
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经过长年累月的努力，他最终实现了自己的梦想。
jingguo changnianleuyuede nuli, ta zhongyu shixianle ziji de mengxiang
After years of hard work, he finally achieved his dream.