多た年ねん

noun, adverb

many years; for many years

Often used in formal or written contexts to indicate a long period of time. As an adverb, it can modify verbs to mean 'for many years'.

• 多た年ねんの経けい験けんを活いかして、新あたらしいプロジェクトに取とり組くんだ。

  Drawing on many years of experience, I tackled the new project.

• 彼かれは多た年ねんにわたりこの地ち域いきの発はっ展てんに貢こう献けんしてきた。

  He has contributed to the development of this region for many years.