trawl

名词 trawl:

1. a long fishing line with many shorter lines and hooks attached to it (usually suspended between buoys)
   同义词：trawl line, spiller, setline, trotline
2. a conical fishnet dragged through the water at great depths
   同义词：dragnet, trawl net

动词 trawl:

1. fish with trawlers

1. The police are trawling (through) their files for similar cases.
   警方正在查阅类似案件的档案。