godan verb (-su), transitive verb
Implies choosing something from a larger group, often with a sense of picking out what is needed or useful. Can be used for both physical objects and abstract items.
使える部品だけを拾い出して、残りは捨てた。
I picked out only the usable parts and threw away the rest.
彼は新聞から面白い記事を拾い出してスクラップしている。
He picks out interesting articles from the newspaper and scrapbooks them.