长年 (cháng nián) — the whole year; throughout the year; a long period of time; years

长年 (chángnián) means 'year after year / over many years' — emphasizes duration across whole years, longer than 常年 in the 'usual, year-round' sense. Common in collocations like 长年累月.

noun
the whole yearthroughout the yeara long period of timeyears

예문

  • 长年
    Tā cháng nián zài wài dì gōng zuò, hěn shǎo huí jiā.
    He has been working away from home for years and rarely returns.
  • 长年
    Jīng guò cháng nián de nǔ lì, gōng sī zhōng yú shàng shì le.
    After years of effort, the company finally went public.
  • cháng nián Lěi yuè de gōng zuò ràng tā jī lěi le fēng fù de jīng yàn.
    Working year after year allowed him to accumulate rich experience.

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