長ちょう日じつ月げつ

noun

long period of time; many years

Literary or formal noun emphasizing an extended duration, often used in poetic or reflective contexts. Not common in everyday speech.

• 長ちょう日じつ月げつを経へて、その伝でん統とうは今いまも続つづいている。

  Over a long period of time, that tradition continues even now.

• 彼かれは長ちょう日じつ月げつの研けん究きゅうの末すえ、ついに新しん発はっ見けんを成なし遂とげた。

  After many years of research, he finally made a new discovery.