trolling  
noun [ U ] uk/trəʊ.lɪŋ/ /trɒl.ɪŋ/ us/troʊ.lɪŋ/
  (FISHING)      
 拖捕
the act of trying to catch fish by pulling a baited line through the water behind a boat
  Trolling is another reliable method and accounts for a surprising number of big fish. 拖捕也是一种可靠的捕鱼方式,能捕到相当多的大鱼。 
 I have used my trolling rods which seem to be too heavy. 我用过我的拖钓杆,但是它们似乎太重了。 
 See: troll
 - More examples
 - Trolling is a great way to catch these spread-out fish as it covers plenty of water.
 - The rods are out and the trolling starts.
 - Trolling is probably the easiest and most productive way to catch a trout or salmon.