fishing expedition

基本解释

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。
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，以损毁他的政治生涯。
We were toting sleeping bags and pads, a camp stove and cooking gear, food for three days — including halibut we’d caught on a fishing expedition the previous afternoon — and a supply of fresh water.
我们带上了睡袋和睡垫、野营炉具和炊具、够吃三天的食物中包括前一天下午钓鱼时抓到的一条大比目鱼，还有饮用水。
Chernoff's attempt to see Jackson's financial records was blocked by Judge Pastor, who said he would not allow such a "deep sea fishing" expedition.
法官帕斯特拒绝了切诺夫试图查阅杰克逊的财产记录这一要求。他说他不会允许这一“ 大海捞针”的措施。

This is a complex inquiry that may seem irrelevant, speculative or a fishing expedition.
FORBES: Freakonomics: The Hidden Side of Managing Money ( September 2, 2005 )
Yet, instead of creating jobs or helping the middle class, congressional Republicans are focused on this politically motivated, taxpayer-funded, election-year fishing expedition.
WHITEHOUSE: Press Briefing
But I love dumping in handfuls of leafy greens and an avalanche of tofu and going on a fishing expedition for them later.
NPR: Friends, Family and a Feast: A Hot Pot How-To