fishing expedition

1. No: It Too Often Becomes a Fishing Expedition Unrelated to Work Issues
   不该监控：太容易成为与工作问题无关的摸底调查
2. The senator says the investigation is a fishing expedition by his enemies to see if they can find anything he has ever done that might hurt his political career.
   这段话说：那位参议员声称，这次调查是他政敌的蓄意盘查，目的是搜罗挖掘他是否有不端行为，以便损毁他的政治生涯。
3. His books are crowded with hunting and fishing expedition.
   在他书中，他经常提到打猎、捕鱼这些探险活动。
4. I have often told students that writing is like fishing: Each venture is an expedition.
   我常对学生说，写作如钓鱼：每一次冒险就是一种探索。

noun

1. an investigation undertaken in the hope (but not the stated purpose) of discovering information