This is the 12376th most frequent Korean word.
달린다
"달린다" means "runs."
This usage of '달린다' is metaphorical, suggesting the swift passage of time, figuratively employing the idea of running.
시간이 너무 빨리 달린다.
Time flies too quickly.
Here, '달린다' is used in its most common sense as 'to run,' indicating the action of running in the park.
나는 아침마다 공원을 달린다.
I run in the park every morning.
In this sentence, '달린다' describes the motion of the train, showcasing its broader usage to signify rapid movement.