wild goose chase
白费力气的搜寻;徒劳之举
释义：
a search that is completely unsuccessful and a waste of time because the person or thing being searched for does not exist or is somewhere else 白费力气的搜寻;徒劳之举
例句：
After two hours spent wandering in the snow, I realized we were on a wild goose chase.
Harry wondered if Potts had deliberately sent him on a wild goose chase.
