wild-goose chase
无结果的追逐或探索；徒劳无益的努力或行动
口语·形容无效努力
英文释义
fruitless or futile activity; a pointless pursuit
例句
The detective realized the tip was a wild-goose chase and wasted a whole day.
典故来源
与wild goose chase相同，源自莎士比亚戏剧，强调无果的追寻。