To search or sweep the bottom body of water, as with a grappling hook or dragnet.
搜寻用抓钩或拖网在水底进行搜寻或打捞.
youdict.comHave the small - sized fishermen that one person operates, also have large dragnet and purse net fishermen.
有一人操作的小型渔船, 也有大型的拖网和围网渔船.
www.youdict.comCue ominous theme music from Dragnet.
仿佛电影里不详的主题音乐随之响起。
dict.so.163.comDragnet surveillance, on the other hand, protects neither.
而天网似的监控，则两者都无法保护。
www.kekenet.comMark VII Productions ( Jack Webb ): Dragnet, Adam 12, Emergency.
马克七世制作公司 ( 杰克?韦布 ): 《警网》 、 《亚当12》 、 《紧急事件》.
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