1. The fishermen set out with their trawlnet to catch fish in the open sea.
渔民们带着拖网出发，去开阔海域捕鱼。

2. The trawlnet is a commonly used tool in commercial fishing to catch large quantities of fish at once.
拖网是商业捕鱼中常用的工具，可一次性捕捞大量的鱼。