godan verb (-ku), intransitive verb
continue for a long time; go on and on; occur repeatedly
Describes an action, event, or state that persists or recurs over an extended period. Often used for rain, war, or hardships.
雨が三日間打ち続いた。
The rain continued for three days.
戦争が何年も打ち続いた。
The war went on for many years.