stumble upon
US /ˈstʌm.bəl əˈpɑːn/
UK /ˈstʌm.bəl əˈpɒn/
短语动词
偶然发现, 碰巧遇到
to find something or someone unexpectedly
示例:
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While cleaning the attic, I stumbled upon some old family photos.
打扫阁楼时，我偶然发现了一些旧家庭照片。
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Researchers often stumble upon important discoveries by accident.
研究人员经常偶然发现重要的发现。