This is the 6893rd most frequent Dutch word.
achtergebleven
"Left behind" or "lagging behind."
In this sentence, 'achtergebleven' means 'left behind' and describes the object, the old bicycle, as remaining at a location unintentionally or due to oversight.
De oude fiets is achtergebleven bij het station.
The old bicycle was left behind at the station.
Here, 'achtergebleven' expresses a figurative sense of not keeping up with developments or advancements, in this case, in technology.
Hij voelde zich achtergebleven in de nieuwe technologie.
He felt left behind in the new technology.
In this context, 'achtergebleven' again suggests that something remains, specifically debris, after an event has occurred.