经年累月 years and months
Explanation
指经过很长一段时间；长时间。
Refers to a long period of time; a long time.
Origin Story
从前，在一个偏僻的小山村里，住着一位年迈的木匠老李。他一生都致力于雕刻木制玩具，为村里的孩子们带来欢乐。他每天清晨便开始工作，日复一日，年复一年，风雨无阻。他用一把古老的刻刀，在木头上雕琢出各种栩栩如生的动物、人物和奇特的造型。这些玩具都充满了童趣，深受孩子们喜爱。经年累月，老李的手艺越来越精湛，他的作品也越来越受到人们的赞赏。他不仅赢得了村民们的尊敬，也成为了远近闻名的木匠大师。他的玩具也成了小山村里独特的文化符号，代代相传。后来，老李的故事被人们传颂，他的精神也激励着更多的人坚持自己的梦想，为自己的目标而努力奋斗，即使是经年累月，也永不放弃。
Once upon a time, in a remote mountain village, lived an elderly carpenter named Lao Li. He dedicated his life to carving wooden toys, bringing joy to the children of the village. Every morning he would start work, day after day, year after year, come what may. With an old carving knife, he carved various lifelike animals, characters, and peculiar shapes into the wood. These toys were full of childlike fun and were loved by the children. Over the years, Lao Li's craftsmanship became more and more refined, and his works were increasingly appreciated. He not only earned the respect of the villagers, but also became a famous carpenter far and wide. His toys became a unique cultural symbol of the mountain village, passed down from generation to generation. Later, Lao Li's story was passed down, and his spirit encouraged more people to pursue their dreams and strive for their goals, even if it took years and years, never giving up.
Usage
作状语，形容时间很长。
Used as an adverbial modifier, describing a long period of time.
Examples
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经过经年累月的努力，他终于完成了这部巨著。
jīngguò jīngnián lěiyuè de nǔlì, tā zhōngyú wánchéngle zhè bù jùzhù。
After years of hard work, he finally completed this masterpiece.
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这项工程经年累月地建设，耗费了大量的人力物力。
zhè xiàng gōngchéng jīngnián lěiyuè de jiànshè, hàofèile dàliàng de rénlì wùlì。
This project has been under construction for many years and has consumed a lot of manpower and material resources.
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他们经年累月地守护着这片土地，从未离开。
tāmen jīngnián lěiyuè de shǒuhùzhe zhè piàn tǔdì, cóngwèi líkāi。
They have guarded this land for years and never left.