| 短语 | stumble on / across / upon sth |
| 释义 | stumble on / across / upon sth to find or discover something by chance and unexpectedly偶然发现（碰见）;SYNcome across•Researchers have stumbled across a drug that may help patients with Parkinson's disease.研究人员偶然发现了一种药物，也许可以治疗帕金森病。 |
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