| 词汇 | stumble across/on/upon something/someone | 
| 释义 | stumble across/on/upon something/someone  phrasal verb with stumble verb uk/ˈstʌm.bəl/ us/ˈstʌm.bəl/ C2 偶然发现;撞见;邂逅 to discover something by chance, or to meet someone by chance  Workmen stumbled upon the mosaic while digging foundations for a new building. 工人们在挖一栋新楼的地基时偶然发现了那幅镶嵌画。  | 
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